USB vs AC power - Google Chromecast

I saw in the packaging that it says AC power is "recommended", so naturally I wanted the best possible experience and hooked mine up with AC power. I was just curious why this is? It would be much easier (and more portable) if I just used USB, but what am I losing by doing this?
I assumed this had to do with the CEC options to allow my TV to power on thru the Chromecast, however I have been unsuccessful in making that work fully. It will turn the TV on only if I turned it off while on the correct input for the chromecast...so kinda useless so far.

GatorsUF said:
I saw in the packaging that it says AC power is "recommended", so naturally I wanted the best possible experience and hooked mine up with AC power. I was just curious why this is? It would be much easier (and more portable) if I just used USB, but what am I losing by doing this?
I assumed this had to do with the CEC options to allow my TV to power on thru the Chromecast, however I have been unsuccessful in making that work fully. It will turn the TV on only if I turned it off while on the correct input for the chromecast...so kinda useless so far.
Click to expand...
Click to collapse
USB power might not be enough to drive the usb stick, while that AC adapter is guaranteed to deliver 850mAh
if your TV's USB is part of an unpowered hub, and you have other devices(or internal devices) powering off that hub, the chromecast might not get enough amperage (500mAh/port per USB standard)

Cool what would be the result of not enough mAh? Meaning if my USB port powers the device am I good, or will I suffer some Wi-Fi signal loss if the mAh is too low?
Sent from my SCH-I535 using Tapatalk HD

GatorsUF said:
Cool what would be the result of not enough mAh? Meaning if my USB port powers the device am I good, or will I suffer some Wi-Fi signal loss if the mAh is too low?
Sent from my SCH-I535 using Tapatalk HD
Click to expand...
Click to collapse
I think it just wouldn't turn on.
Another benefit of AC power is that when you hit cast something, it'll automatically turn on the TV.

That is what I was curious of. So the auto turn on feature won't function on USB power? Only A/C power?
Sent from my SCH-I535 using Tapatalk HD

GatorsUF said:
That is what I was curious of. So the auto turn on feature won't function on USB power? Only A/C power?
Sent from my SCH-I535 using Tapatalk HD
Click to expand...
Click to collapse
Well the chromecast needs to be on already for it to turn on the TV.
If the TV is off, the chromecast won't be getting any power so you need to turn on the TV to turn on the Chromecast.

Right, not a big deal for me since that feature doesn't seem to work on my TV anyways. I am using AC power atm. If that's all I'm missing I might aim for portability.
Thanks
Sent from my SCH-I535 using Tapatalk HD

I'm using USB power off of the TV and have no issues with anything..

Related

[Q] USB Charging with Pc/Mac

I'm having an issue,and seems not just me,that I can't charge the Tab via usb connected on a laptop or a Mac book (pro).
I'm wondering if its firmware related, I've tried JID and JI6 same issue.
Are you guys having the same?
If someone is not having this problem can please be so nice to tell me the firmware version?
Thanks
no, you cannot charge the tab from a PC usb slot cause of some minimum power requirements which was the same way with ipad
chowdarygm said:
no, you cannot charge the tab from a PC usb slot cause of some minimum power requirements which was the same way with ipad
Click to expand...
Click to collapse
No is not the same than ipad, ipad is possible to recharge with new macs (that what apple says on the web site, the don't say how new though). But is true the iPad has 2A battery versus the Galaxy Tab that has 4000mAh, I was hoping that there was a way to recharge it (slowly but at least to keep it alive when is connect)
zerocool76 said:
No is not the same than ipad, ipad is possible to recharge with new macs (that what apple says on the web site, the don't say how new though). But is true the iPad has 2A battery versus the Galaxy Tab that has 4000mAh, I was hoping that there was a way to recharge it (slowly but at least to keep it alive when is connect)
Click to expand...
Click to collapse
no idea on that. i didn't keep my tab connected so long to pc but whenever i connect it to pc it shows on battery with cross mark on charging symbol. may be will test it this weekend
charging
hi guys,
mine is also showing the non-charging-sign but it charges slowly - get juice plotter and try it your self
Can I recharge the Tab in the car sigarette ligther socket with USB adapter?
Portos61 said:
Can I recharge the Tab in the car sigarette ligther socket with USB adapter?
Click to expand...
Click to collapse
check this out, they have the adaptor for cigarette...
http://www.thinkgalaxytab.com/universal.html
I found the link above on google, but I've seen other around the web.So I think you can
hipath said:
hi guys,
mine is also showing the non-charging-sign but it charges slowly - get juice plotter and try it your self
Click to expand...
Click to collapse
Mine is the same guys... I left my AC charger at work over the weekend and have been charging it via USB the whole time... Slow but it gets there if you leave it on over night!
Mine won't charge unless I use the power adapter from Samsung
Mine does charge but slowly from USB.... you should also know that different PC boards and laptops have different power outputs.... in most cases, your tab should charge very slowly on USB power. Mine charges and has BT and Wifi on also... but with heavy use and plugged in to my laptop, it may offset and drain ever so slightly....
Same thing goes for car chargers... if not rated for higher output, it will charge VERY slowly. The original Samsung car charger has a much higher power output. If you can find one that has the same aftermarket USB car adaptor for Ipad charging, that should work too
eskasi said:
The original Samsung car charger has a much higher power output.
Click to expand...
Click to collapse
Indeed (yet it is very compact and doesn't get hot).
Related discussion here:
http://forum.xda-developers.com/showthread.php?p=9172163#post9172163
I tried my iPad charger - output rating looks to be the same - but it didn't work very well.
brucewilsonpa said:
I tried my iPad charger - output rating looks to be the same - but it didn't work very well.
Click to expand...
Click to collapse
The contacts on mine are upside down compared to an iPad/iPod/iPhone charger. The blade on which the contacts sit is also higher in the charger slot than an iPad charger. How did you get it to fit without breaking something?
Some PC:s (motherboards) have so weak power output via USB, that they just barely provide a mouse and a keyboard but nothing more.
So anyone should not expect it to be enough for charging Tab.
Tab's own power supply gives 2 Amps out!
My experience about car-usb-adapters: one can charge Tab, other quite similar for some reason not. However, both charge Galxy S fine.
Just something to keep in mind as an option... Usb 3.0 will give more juice to usb cables than current usb ports. Apple has "cheated" and already increased the power to the regular usb ports on their newer laptops on par/better with usb 3.. So... If you get usb 3 cards installed you'll have a port with enough amps to charge the tab. Easier/cheaper to just buy a pdmi cable but if you are about to upgrade to usb 3 its more incentive to do so.
Sent from my SCH-I800 using XDA App
Regarding the ipad charging you can use the below link to to download an ASUS program that will boost the USB power for Windows this works for the ipad and it's showing as charging when connected to my PC this may also work for galaxy tab
http dlcdnet.asus.com/pub/ASUS/misc/utils/AiCharger_V10006_XpVistaWin7.zip
Charging using usb on my mbp does take a long time. I timed it and it took at least 6 hours to charge from completely empty to full. Its ok since I plug it in when I'm about to go asleep and by the time I'm up its fully charged.
essahar said:
Regarding the ipad charging you can use the below link to to download an ASUS program that will boost the USB power for Windows this works for the ipad and it's showing as charging when connected to my PC this may also work for galaxy tab
http dlcdnet.asus.com/pub/ASUS/misc/utils/AiCharger_V10006_XpVistaWin7.zip
Click to expand...
Click to collapse
Careful with that.
Seems it has the not-uncommon tendency to screw up USB drivers to the point that mice and keyboards won't work either, especially on Win7 and Vista X64 machines. It got me, had to do a system restore to fix it. Neat idea though.
pdiddypdiddypdiddy said:
Apple has "cheated" and already increased the power to the regular usb ports on their newer laptops on par/better with usb 3.
Click to expand...
Click to collapse
USB port should give at least 500mA. But anything more is OK. So Apple can make their USB ports to give anything over 500mA and it is well within the standard. Actually it is good for everyone because if Apple port can give 2A you can use non powered hubs and have power for lots of USB devices.
Actually the Tab charges fine (albeit slowly) from a USB, you just have to be aware of a few things. Firstly as mentioned above some USB ports provide more power than others. Try the different ports on your machine and you'll soon figure out which ones work best. Secondly, while the Tab will display the "Connect your charger" message, it is actually charging. Go into Settings, About Phone, Status and watch the battery level. It'll take a while but will creep up. Finally, it charges faster when the Tab is switched off. ie: if you're actually using it, you won't get a charge, if you have it in standby with screen off, it'll charge slowly (takes most of a day for a full charge) and if the Tab is switched off, it'll go a lot faster (though still not as fast as with the power adapter.)
This is good to know as you can plug it in to your computer and let it set on your desk at work all day and know that it is slowly trickle charging.
I also found that plugging the USB cable into an Apple adapter (from an iPhone) brought up the same "Connect your charger" message, but did charge the Tab, faster than a USb but not as well as my samsung plug.

[Q] Cant charge with external battery

Hey guys,
I have the ZNEX Powerpack:
Capacity: [email protected],7V
Output: 5V 1A
amazon.de/ZNEX-Ausgangsleistung-Hochleistungsakku-Playstation-Blackberry/dp/B004A8288U/ref=sr_1_1?ie=UTF8&qid=1363106013&sr=8-1
Unfortunately its not possible for me to charge my s3 mini with this external battery.
The cable and the battery is okay, tested that with other devices.
Anyone can solve this problem or has it too?
Thanks
Turn off phone turn on charger plug in to phone then turn phone on it should charge and you can use it at same time
Sent from my GT-I8190 using xda app-developers app
serophia said:
Turn off phone turn on charger plug in to phone then turn phone on it should charge and you can use it at same time
Sent from my GT-I8190 using xda app-developers app
Click to expand...
Click to collapse
Thanks for the quick answer but that doesnt work
also when the device is off and i turn on the external battery the device turns on and gets into a load mode or something (it doesnt even load at this Point, seems so that it just init the "turned off charging" dont know how i should call that )
same Thing when i restart the phone with external battery plugged on, there just happens nothing, normal boot process without any hint of charging^^
Ahh really? I had same issue and my method seemed to work are you trying with ur usb cable that came with the phone or the one that cane with the battery power. Try both out
Sent from my GT-I8190 using xda app-developers app
about newardb
serophia said:
Ahh really? I had same issue and my method seemed to work are you trying with ur usb cable that came with the phone or the one that cane with the battery power. Try both out
Sent from my GT-I8190 using xda app-developers app
Click to expand...
Click to collapse
What do you mean with "the one that cane with the battery power"?
Ive tried a lot of different usb cables they work all with the original charging-adapter but None with the external battery
tried it with the Amazon Basics usb cable, original Samsung data cable and the cable from the old Motorola xt 720 ^^
But thank you for the answer
strange.. when device is off can it charge or it doesnt charge at all with the samsung data cable. If it does charge while off, when its charging turn on the phone and it should charge as well.
witleg legislation
serophia said:
strange.. when device is off can it charge or it doesnt charge at all with the samsung data cable. If it does charge while off, when its charging turn on the phone and it should charge as well.
Click to expand...
Click to collapse
Sadly that doesn´t work too. The device is doing absolutely nothing when i restart it from the turned off charging. Its like it wouldn´t know that theres a cable that wants to Charge it.
firefish18 said:
Sadly that doesn´t work too. The device is doing absolutely nothing when i restart it from the turned off charging. Its like it wouldn´t know that theres a cable that wants to Charge it.
Click to expand...
Click to collapse
Dang idk then maybe the voltage is too low to be recognized. Mines a 5v 5000 mah battery supply and it works fine
Sent from my GT-I8190 using xda app-developers app
serophia said:
Dang idk then maybe the voltage is too low to be recognized. Mines a 5v 5000 mah battery supply and it works fine
Sent from my GT-I8190 using xda app-developers app
Click to expand...
Click to collapse
My external battery has also 5v.. and 1A should reach to Charge
Same problem here. No matter what external battery pack, this S3 mini is not detecting the battery pack as a charger. All of these packs work just fine with any other phone: tried with 2 SII, i8910, different Nokia phones, Blackberrry's etc.
I suspect that somewhere in the kernel there's no "3rd" unknown source or it has odd values, or it's somewhere else, but definitely soft problem as phone usb port works fine and recharges just fine from PC or laptop with any and every usb cable. Same goes for wall chargers. I haven't tried with car chargers just yet, but might do so. Just the phone is not mine, it's my wife's phone so I can't just take it with me.
Any suggestions?
Just a quicky: Is your phone trying or connecting to a PC in MTP mode?
XXAMA2 rom here and it always has only MTP or Picture mode, maybe this triggers something if on external power pack?
Edit: BTW, even when phone is turned off it won't charge the battery from the 3rd party external battery packs... weird.
Edit2: It started to charge out of 2.1A port on external pack after 5 minutes... then continued to charge once the phone is turned on. Later I unplugged it and plugged in again and it won't charge if the phone is on. Oh well, at least it can charge if first turned off. At least that when on the road and without wall plug...
Even more strange is what I'm getting now when plugging to Duracel external pack - phone starts the music player on it's own and starts to play... I think it's defo something related to MTP or such...
Strange. My power bank works just fine. The charging indicator shows when I plug my S3Mini with my power bank. (Cheap chinese brand. 5200mAh, 1.0 A)
Usually when the USB indicator showed up when you plug your external power source, the cable is the one with 4 lines (two for transferring data, and the other two for receiving electricity needed for charging, or +/- ).
Try using the USB cable with two lines only (electricity lines only, without data transferring lines)
kuroiraida said:
Strange. My power bank works just fine. The charging indicator shows when I plug my S3Mini with my power bank. (Cheap chinese brand. 5200mAh, 1.0 A)
Usually when the USB indicator showed up when you plug your external power source, the cable is the one with 4 lines (two for transferring data, and the other two for receiving electricity needed for charging, or +/- ).
Try using the USB cable with two lines only (electricity lines only, without data transferring lines)
Click to expand...
Click to collapse
Well, after trying all USb cables I have in my house I found one that is CHARGING IT!!! I dunno what wires it has or not and I don't care ATM. Point is there's nothing (EDIT) wrong with battery packs nor the phone. It all still indicates damn MTP kicking in where it shouldn't IMO. Dang Samsung for screwing it all up yet another time.
Still, I'm happy it CAN work all right, so no more depleted battery when on the road / trip
Thanks for a great suggestion there!
+1
Fevves said:
Well, after trying all USb cables I have in my house I found one that is CHARGING IT!!! I dunno what wires it has or not and I don't care ATM. Point is there's nothing working with battery packs nor the phone. It all still indicates damn MTP kicking in where it shouldn't IMO. Dang Samsung for screwing it all up yet another time.
Still, I'm happy it CAN work all right, so no more depleted battery when on the road / trip
Thanks for a great suggestion there!
+1
Click to expand...
Click to collapse
Yes. The only way to figure it out is to peel it off, which is not a sensible thing to do anyway.
Glad to be a help.
Sent from my SGS III Mini using XDA
Same trouble here
So i'm having the same trouble with my powerbank, tested with 3 different S3 minis, and all have the same result, also tested my powerbank and cables with another 2 different cellphones (Sony and LG) and worked fine...
Also tried using stock ROM, same result...
When i try to charge with the phone on doesn't work, but if i turn the phone off it works, i made a video showing:
watch?v=99-SdtlV3Fk
(i cannot post youtube videos yet)
Any suggestions?
I'm running maclaw's CyanogenMod 11.0 20140610, there is any LOG to see what happens? where can i access it?

[Q] Dock and standard micro usb port

Hi everyone,
Just a little question, does the standard Nexus 7 micro usb port still work when the dock is attached?
I want to have my Nexus 7 always connected to the power supply and in the same time have an usb device connected to the "standard" micro usb port (not the one in the dock).
Thanks!
mrA
Short answer: No
Longer answer: When the tablet enters OTG mode it disables the POGO inputs. That's because they're connected to power and the Nexus is providing power to the USB leads to power the attached device. If they weren't disconnected it'd be a case of power in (POGO) and power out (USB) at the same time which most likely would fry some electronics inside the Nexus.
Even timur's kernel which does allow OTG + charging via a special cable doesn't support this.
Sent from my Nexus 7 using Xparent Purple Tapatalk 2
Ok, thank you for answer. :good:
bsoplinger said:
Short answer: No
Longer answer: When the tablet enters OTG mode it disables the POGO inputs. That's because they're connected to power and the Nexus is providing power to the USB leads to power the attached device. If they weren't disconnected it'd be a case of power in (POGO) and power out (USB) at the same time which most likely would fry some electronics inside the Nexus.
Even timur's kernel which does allow OTG + charging via a special cable doesn't support this.
Sent from my Nexus 7 using Xparent Purple Tapatalk 2
Click to expand...
Click to collapse

[Q] Xperia Z1 not charging by usb when pc is turned off.

Hello,
My xperia z1 charges only when my PC is turned on (it's in bios or in system). When it's off it won't charge as for example my old htc hd2 or my sansa clip mp3.
Do you have any ideas how to solve this issue?
I would suggest that you turn on the computer
Sent from my C6903 using xda app-developers app
frank060272 said:
I would suggest that you turn on the computer
Sent from my C6903 using xda app-developers app
Click to expand...
Click to collapse
When turn off usb is not strong enough to charge Z1 as some new device need more power to charge.
That is true. Z1 needs to suck more power while charging. For example, if i connect my z1 to the dock charger (batery level at 10%) and watch an on-line movie, i get the notification that the power source is not enough to charge my device and that the phone discherges faster than it is charging.
frank060272 said:
I would suggest that you turn on the computer
Sent from my C6903 using xda app-developers app
Click to expand...
Click to collapse
Thanks! I would never have guessed that you should turn on a computer...
bogdan wst said:
That is true. Z1 needs to suck more power while charging. For example, if i connect my z1 to the dock charger (batery level at 10%) and watch an on-line movie, i get the notification that the power source is not enough to charge my device and that the phone discherges faster than it is charging.
Click to expand...
Click to collapse
I will ask asus support if it's possible to send a bit more power when pc is off.
ut2222 said:
I will ask asus support if it's possible to send a bit more power when pc is off.
Click to expand...
Click to collapse
It's the same standard effect on usb port whether pc is on or off.
harfot said:
It's the same standard effect on usb port whether pc is on or off.
Click to expand...
Click to collapse
Depends on the computer and port configuration, but for most modern ultrabooks this is not true. While on, the system can provide up to 1.1A current if a capable device asks for it, but only certain computers can do this while off, and some don't even supply any power through the usb controller while off. ASUS products usually have this ability though. @ut2222 have you tried all the USB ports? Is it a relatively new ASUS?
Have you looked into downloading software from Asus that allows for USB charging with the computer off? My gigabyte board came with one, Asus might as well.
ut2222 said:
Hello,
My xperia z1 charges only when my PC is turned on (it's in bios or in system). When it's off it won't charge as for example my old htc hd2 or my sansa clip mp3.
Do you have any ideas how to solve this issue?
Click to expand...
Click to collapse
Is your USB port a yellow colored one? Those are the ones that power devices while at sleep or turned off. Is your PC a laptop? Did you unplug it? Most powered ports will not work if the laptop is unplugged to prevent the battery from draining completely.

Turn Chromecast off after use

After I use the Chromecast and switch the input source of my TV to other mode, how can I switch off the Chromecast? Thanks!
You don't.
Sent from my Nexus 5 using Tapatalk
thedudejdog said:
You don't.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
If there is no power off button, the Chromecast will operate as long as the AC adapter is connected. It wastes the power when you do not use it and is an environmental issue. How come does it have such design flaw? Looking at the spec, it is CEC compatible but not every old TVs are CEC compatible. Google must fix it to save the energy as you know now energy saving is very heated subject.
ScottXe said:
If there is no power off button, the Chromecast will operate as long as the AC adapter is connected. It wastes the power when you do not use it and is an environmental issue. How come does it have such design flaw? Looking at the spec, it is CEC compatible but not every old TVs are CEC compatible. Google must fix it to save the energy as you know now energy saving is very heated subject.
Click to expand...
Click to collapse
Design flaw? Use a short USB cable to plug it into the USB port on the TV. When the TV turns off, the Chromecast turns off.
IIRC, it only draws something like 5W. That's not going to jack your electric bill up much at all.
FrayAdjacent said:
Design flaw? Use a short USB cable to plug it into the USB port on the TV. When the TV turns off, the Chromecast turns off.
IIRC, it only draws something like 5W. That's not going to jack your electric bill up much at all.
Click to expand...
Click to collapse
You are quite right if the TV is equipped with USB ports. The Chromecast comes with an AC adapter and that assumes that the TV may not have USB port like my 42" LG LCD TV. For the latest TVs, all will go for smart TVs and Chromecast has no market at all in the future. YouTube and Netflex apps are the must for the latest smart TVs. It is an interim product to fill the gap.
All new TVs in Europe must have power management feature that it will go into standby mode if you do not change any mode or channel in 4 hours in order to meet ErP Directive legislation.
ScottXe said:
You are quite right if the TV is equipped with USB ports. The Chromecast comes with an AC adapter and that assumes that the TV may not have USB port like my 42" LG LCD TV. For the latest TVs, all will go for smart TVs and Chromecast has no market at all in the future. YouTube and Netflex apps are the must for the latest smart TVs. It is an interim product to fill the gap.
All new TVs in Europe must have power management feature that it will go into standby mode if you do not change any mode or channel in 4 hours in order to meet ErP Directive legislation.
Click to expand...
Click to collapse
I have a Samsung Smart TV with YouTube and Netflex apps but maybe it's not smart enough as the YouTube app only shows selected videos. Maybe the next model up from mine that came with WiFi would have had YouTube internet access but I don't know.
I'll pull out the Kill-a-watt later, but the adapter it's running on and the draw should be less than 3kW a year. That would be about 20 cents of electricity if it reached that level.
That's it? You can't even say that's peanuts cause that's like air lol.
Sent from my HTC One using xda app-developers app
wptski said:
I have a Samsung Smart TV with YouTube and Netflex apps but maybe it's not smart enough as the YouTube app only shows selected videos. Maybe the next model up from mine that came with WiFi would have had YouTube internet access but I don't know.
Click to expand...
Click to collapse
Very good point why the existing smart TVs are still not as popular as the smartphones do. The smart function in TV is still a stripped down version. Probably we need to await Apple iTV. It will be a disruptive TV to the traditional TVs. Think about what is the smartphone now?? It is a small computer in a mobile phone form factor. You can have your desired features thru apps. Why we cannot use the same concept for TVs!!
ScottXe said:
Very good point why the existing smart TVs are still not as popular as the smartphones do. The smart function in TV is still a stripped down version. Probably we need to await Apple iTV. It will be a disruptive TV to the traditional TVs. Think about what is the smartphone now?? It is a small computer in a mobile phone form factor. You can have your desired features thru apps. Why we cannot use the same concept for TVs!!
Click to expand...
Click to collapse
SmartTVs are only as smart as the apps they use! LOL The issue isn't the TV the Issue is the folks writing the apps are not doing such a good job.
I read that there may be some TVs that come with Chromecast support built in soon enough.
That will solve all the problems with wasting power.
Should be noted that plugging the CCast into a USB on the TV will prevent the CCast from being able to turn the TV on.
ScottXe said:
If there is no power off button, the Chromecast will operate as long as the AC adapter is connected. It wastes the power when you do not use it and is an environmental issue. How come does it have such design flaw? Looking at the spec, it is CEC compatible but not every old TVs are CEC compatible. Google must fix it to save the energy as you know now energy saving is very heated subject.
Click to expand...
Click to collapse
You sound like someone who should get a Kill a Watt meter just for the fun of it. I found out that my Logitech PC speakers with Subwoofer use 5 watts even when turned off; a 100 watt receiver uses 5 watts when off; a VCR player uses 8 watts when off. Non of these devices have a clock or light when off, just an OFF button. Now that's a waste!
Chromecast uses about 2 watts of power. Roku and similar set top boxes use about 4 - 5 watts. None of these have power switches. They're design to be on always. If they were sucking 20 watts all the time that would be a different story.
I have a Vizio TV that turns USB power off automatically when TV power is off. But I've other TV sets that keep the USB power on even when TV is off.
ScottXe said:
For the latest TVs, all will go for smart TVs and Chromecast has no market at all in the future. YouTube and Netflex apps are the must for the latest smart TVs. It is an interim product to fill the gap.
Click to expand...
Click to collapse
Disagree. I have a 1st gen Sony gtv, I'm using a chromecast on it now because it's already so out of date (after only 3 years) the apps lag to near unusability. I don't want to spend near 1k every two years to upgrade a perfectly good TV cause it needs more ram or a better processor. Built in smart TVs are NOT a reasonable future. Boxes or dongles that can be upgraded for 100 bucks or 35 like chromecast, that's where it's at.
Sent from my Nexus 5 using xda app-developers app
---------- Post added at 06:37 PM ---------- Previous post was at 06:32 PM ----------
ETFoneHome said:
But I've other TV sets that keep the USB power on even when TV is off.
Click to expand...
Click to collapse
That's how mine works. Most all the electronics in my house don't actually turn "off" they just enter a low power stand by mode.
If the few watts of power bother you, hook your equipment up to a power strip and turn that off when not in use. That way it can't pull any power at all.
Sent from my Nexus 5 using xda app-developers app
FWIW, at first I had it plugged into my TV's USB port, but 2 things bothered me about that setup, one, what if I turned off the TV during an flash/update, would it brick? and the other, is shortening the lifespan of my TV's power supply, or outright damaging it, Google is not known for their QA, and I'll be damned if I'm letting their crapmanship destroy my Sony, spinning me off into a whole new dimension of pissed off. So I let it run 24/7 through its own power block, if it dies of heat damage, 35 bucks isn't so bad.
Chromecast isn't meant to be completely off any more than your phone is.
If Chromecast was turned off, it wouldn't be able to turn on your TV nor would it be able to receive cast requests. Using the TV's USB to power Chromecast sort of turns it off, but you also risk corrupting an update in progress. Not a huge deal if you're rooted and can force-flash an update, but if you're not rooted, it might put Chromecast in a "confused" state.
TVs with built-in Chromecast will solve this - at the expense of more vampire power (since the TV has to be some degree of "awake" to listen for cast requests).
If you're really concerned about power usage and your TV doesn't have (powered) USB ports, you can use something like a TrickleSaver or a similar energy-saving power strip or UPS to shut off power to Chromecast after the TV is turned off.
bhiga said:
Chromecast isn't meant to be completely off any more than your phone is.
If Chromecast was turned off, it wouldn't be able to turn on your TV nor would it be able to receive cast requests. Using the TV's USB to power Chromecast sort of turns it off, but you also risk corrupting an update in progress. Not a huge deal if you're rooted and can force-flash an update, but if you're not rooted, it might put Chromecast in a "confused" state.
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Click to collapse
Well! I removed my CC from my TV and powered it by the wall-wart looking to get the latest Eureka-ROM. I didn't watch it but caught a red LED which I thought was the reboot but apparently it was the start not finish. I plugged it back into my TV, I had the new home screen but no Team Eureka splash screen. I had to manually flash it. Don't know if it can be messed up beyond repair or not but it seems if your using the USB port, you should turn off the OTA updates to be safe and just watch the forum for any updates.
BTW-Gave my nephew a rooted CC for Xmas and he said it was like having a new TV just like mentioned above! :good:
mdamaged said:
and the other, is shortening the lifespan of my TV's power supply, or outright damaging it,
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One of my Chromecast is powered by the USB on a TV that keeps the USB power on even when TV is off. I tested it with a Kill a Watt meter.
The 42" LCD Panel uses about 80 - 90 watts when on. When the TV is completely off and Chromecast is attached to USB power, it uses 2 watts. With the TV completely off and no Chromecast attached, it uses 0 watts.
So it's an extra 2 watts. My nightlights use more than that. :fingers-crossed:
ETFoneHome said:
One of my Chromecast is powered by the USB on a TV that keeps the USB power on even when TV is off. I tested it with a Kill a Watt meter.
The 42" LCD Panel uses about 80 - 90 watts when on. When the TV is completely off and Chromecast is attached to USB power, it uses 2 watts. With the TV completely off and no Chromecast attached, it uses 0 watts.
So it's an extra 2 watts. My nightlights use more than that. :fingers-crossed:
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Yeah, but your nightlights probably go through better QA!
mdamaged said:
Yeah, but your nightlights probably go through better QA!
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Obviously we're all missing out on an epic story of a Google TV or Chromecast that shot out flames here...
bhiga said:
Obviously we're all missing out on an epic story of a Google TV or Chromecast that shot out flames here...
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Hmm chromecast flame thrower, I like it...
Sent from my Nexus 5 using xda app-developers app
I would like to eventually see Google allow some configuration options in the Chromecast setup app, and some "turn off display after X minutes of idle" option. That should save a tad bit of power if they can turn off the HDMI output entirely, plus TVs with automatic input switch would then switch back to whatever other input is active. Even if they can't turn off the output, at least it would help prevent burn-in.

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