Database Develop

Wont start! :(

I got a Tab yesterday without any cables. There was a little amout of battery left so i Rooted it and bought the "Euro Tap Bootstrab", i tried it, boot CWM, took a backup and then i turn it off. No battery left.
I got a USB cable today. Plugged it in my pc and tab, but I honestly cant see if charging or not. Sometime comes a large battery icon, but when pressing button it goes black
Cant hard reset.
Please help

Prozel said:
I got a Tab yesterday without any cables. There was a little amout of battery left so i Rooted it and bought the "Euro Tap Bootstrab", i tried it, boot CWM, took a backup and then i turn it off. No battery left.
I got a USB cable today. Plugged it in my pc and tab, but I honestly cant see if charging or not. Sometime comes a large battery icon, but when pressing button it goes black
Cant hard reset.
Please help
Click to expand...
Click to collapse
A PC will charge it very slowly. You need to plug it into a wall charger. You probably didn't brick it. See if you can get a USB wall charger from somewhere. Usually Blackberry chargers have a USB port that you can plug the cable into.

Using my HTC usb charger, thanks! So I just have to wait now?

Prozel said:
Using my HTC usb charger, thanks! So I just have to wait now?
Click to expand...
Click to collapse
Yeah, pretty much. I don't think backing up your Tab would have bricked it, even if the battery died mid-backup since you're reading from memory (internal), not modifying it.

Ehm, to be precise, I pressed "Reboot System", a samsung logo popped out, I waited a long time and it didnt change so i turned it off. Dont hope it's bricked

Just what!? I've charged it for about an hour and have litterly tried everything, this suck big time! It just wont start

Prozel said:
Using my HTC usb charger, thanks! So I just have to wait now?
Click to expand...
Click to collapse
I've charged it for about an hour
Click to expand...
Click to collapse
Just plugging it in HTC charger gives you almost nothing! Original Samsung charger has a "trick" inside - it has pins 2 and 3 of its USB output connector shortened, and on top of that it has also 2 resistors between these pins and +5 and GND pins. When you plug the cable in common charger the tab does not "understand" that now it must take full power from the charger and does not charge the battery actually (it should take appr 1 A current from the original charger for 4 hours to be fully charged). You should get an original charger, or get a special adapter connected between your HTC charger and tab's cable (I have seen some at Amazon.de), or to make an adapter yourself.
PS. There is a strong recommendation: never do any programing, flashing, backup or restore with battery discharged below 80%, better to do it with charger connected.

Thanks, good to know, however the orginal is lost.. so can i still use the HTC but it will take longer or?

Prozel said:
Thanks, good to know, however the orginal is lost.. so can i still use the HTC but it will take longer or?
Click to expand...
Click to collapse
I am afraid the tab will "think" that there is no charger at all. Connecting it to USB port of PC may give a result after several hours (very-very slow charging). Why don't you think over getting (or making) an adapter?!

Will defo get one, but then I would have wait till monday
Don't think i can make one

Prozel said:
Don't think i can make one
Click to expand...
Click to collapse
Actually I have made this adapter in 20 minutes (but I am formerly an electronic engineer, though).
Well, then try to connect it to PC for the whole night (do not forget to keep PC running ), maybe it works out...
First try to run it, if it hangs, try CWM/restore, if it is bricked - re-flash it.
Good luck!

Thanks alot, really! Will report back tomorrow. Again tanks

Just to be clear, when it's charged, does the battery icon have to be there all the time? It does disappear after some while when it's connected

Battery icon disappears in several seconds when the tab is switched off. Short pressing on power on button shows it again for some while. Moving dots under icon show charging in progress.
When the tab is fully charged it makes a short sound.
When the tab "understands" that it is connected to a charger, it also makes a short sound.
PS. After recovering the unit I recommend to install Battery Watch from the Market - it has a widget and you will always know the state of battery etc. And you can see a graph showing a battery behavior. And this application is on top of that shouting - "Charging started!", "Charging complete!", which is funny...

Guess mine doesn't charge?
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Sorry for delay - no, it does not charge... the reason was explained.

Yeah i see now. Thanks for taking you time. Defo appreciated

Just for reference, do NOT turn your GTab on while charging from a pc. It won't charge at all. Keep it turned off, and then wait for like 9 hours (it takes about 50 minutes to increase the charge to 10% from my laptop).
And when you flash, always have a full charge. ;-)
Sent from my GT-P1000 using Tapatalk

Hehe, yeah I just couldn't wait
Gonna pick up a HDMI dock tomorrow, until I've connected it to a laptop to see if it will charge.

So i got a proper charger, but does it charge?

Charging LED *DOES* exist

I know you all were wondering where the charging LED is.... Well, you see that little dot in between the micro USB and micro HDMI ports? That's it.
(I apologize for the horrible quality pictures, they were taken with my 3DS.)
As you can see here, the charging LED does not work properly when the phone is on.
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When you turn it (fully) off, unplug it and plug it back in, however, it works.
Clear shot.
And, once you turn your phone back on, it goes away.
This is a software bug that a rumored OTA bugfix may address.
Apps like lightfow can allow you to use the notification light for the time being as a charging indicator.

Thank you, I was curious about this myself.

Cool
Sent from my DROID3 using XDA Premium App

?? Really ?? What is the point of that LED. I don't think I have ever charged my phone when it was turned off. Someone should spank the engineer that came up with this bright idea!!

I knew my eyes weren't seeing things.
Sent from my DROID3 using XDA Premium App

Anthrax79 said:
?? Really ?? What is the point of that LED. I don't think I have ever charged my phone when it was turned off. Someone should spank the engineer that came up with this bright idea!!
Click to expand...
Click to collapse
i always used the light as an indication of properly attaching the usb cable, since it can sometimes be cumbersome, especially in the dark, when trying to insert it.
but then, when you use a cradle, who cares?

Not to mention your phone kinda turns on (if its already on) when you insert the charging cable/dock it.

Not true. You can plug the Droid 3 in while it is off, and it will continue to charge while being off without turning the phone on.
Sent from my DROID3 using XDA Premium App

wgoeken said:
Not true. You can plug the Droid 3 in while it is off, and it will continue to charge while being off without turning the phone on.
Sent from my DROID3 using XDA Premium App
Click to expand...
Click to collapse
technically, yes. but there is actually a program that kicks in, that prevents the phone from completely powering up, and the also displays the sloshy battery icon. AOSP Android would automatically power up the phone.
the only reason your phone doesn't seem to power up is because of Motorola.

mine doesn't show up even I turn off the phone, why...

I've run the battery dead, and plugged it in and never got the charging LED to work. Is my phone defective, or is this still part of that bug? And why did Moto not hard wire this to the USB power. It'd serve as a diode, not letting the charge flow back through the USB cable (like when a laptop goes to sleep when charging) and would be a notifier, not to mention would be cheaper, replacing a diode that is probably already there and not having to use software to control it.
Wow, poor design.

pplude said:
I've run the battery dead, and plugged it in and never got the charging LED to work. Is my phone defective, or is this still part of that bug? And why did Moto not hard wire this to the USB power. It'd serve as a diode, not letting the charge flow back through the USB cable (like when a laptop goes to sleep when charging) and would be a notifier, not to mention would be cheaper, replacing a diode that is probably already there and not having to use software to control it.
Wow, poor design.
Click to expand...
Click to collapse
It has been discussed and we are all hoping it will be fixed with an update.
Sent from my DROID3 using Tapatalk

USB Charging.

I've misplaced my wall charger for my 8.9, I'm trying to build one at work. I know it's 5 volts at 2 amps, but my question is, are the data lines crossed like on the Charger for the Captivate? Thanks.

Well, Shorting the TX/RX lines didn't trigger 2amp charging.

Are you running a stock kernel ?
You'll need to be running Motleys kernel or CM9/AOKP for usb charging

I'm running Motleys kernel.
It was only pulling .5 amp with the data pins, open and shorted.

did you run the script to enable USB charging ?
There's a widget someone made on the 10.1 that does the scriptydoodah bit for you, I'll have a poke around and see if I can find the post
Edit - Can't find the post, but here's the widget apk
Can't credit who it was that made it, when I can find the post though I'll edit this with the credit

Interesting. So the CM9/AOKP kernels support USB charging?

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But by default will it only pull in 0.5amp? I use the tablet in my car and right now it discharges (slowly) when it is docked.
Will the script change that so I don't need to take the tablet inside once a week and charge it?

ghost__ said:
But by default will it only pull in 0.5amp? I use the tablet in my car and right now it discharges (slowly) when it is docked.
Will the script change that so I don't need to take the tablet inside once a week and charge it?
Click to expand...
Click to collapse
Yes, I thought it was like with the captivate(they cross the datalines and then the device knows its on the charger), but no.
Flan, the apk linked, I downloaded, it but it won't parse?

That is incredibly disappointing. I never used the stock and always just assumed that this was an issue that was related to AOKP and would go away once Samsung released their official ICS build.

muffdoc said:
Yes, I thought it was like with the captivate(they cross the datalines and then the device knows its on the charger), but no.
Flan, the apk linked, I downloaded, it but it won't parse?
Click to expand...
Click to collapse
Very odd, worked on both stock with Motley's kernel and as you can see works on CM9, that was using the stock charger lead but lugged into the USB port of my laptop, it does charge slower, but certainly puts in more than it's using

No worries mate.
I have the script on the tab already, the widget would of been cool, but I just threw it on the charger and I don't get the red slash over the battery when I have it connected, so shorting the data lines, may have done the trick.
I'm also wondering if I connect the two USB ports together, would I be able to pass data between my Cappy and the 8.9, like a crossover cable and to PC's and no hub.
Damn my rambling mind.

I have stock 3.2 Rom with _motley kernel and my USB charging works for some reason, without any scripts... Like, when I turn the screen off, it goes upto 100%, but as I turn the screen on it is slowly draining the battery to a certain point.

Yes because when it is connected via USB the tablet only requests 0.5amps of power but when the screen is on + wifi + BT, etc the tablet uses more power than it is bringing in. Therefore, despite it reporting that it is charging it is actually draining the battery.

What are you charging it off ?
I left mine plugged into my laptop overnight with wifi, gps and BT all turned on and it charged fully in 8 hours

Deal Extreme charger
I use china adapter as an extra. SKU: 115525 at deal extreme. The one loader that doens't make my tablet nag it isn't charging when on.

muffdoc said:
Well, Shorting the TX/RX lines didn't trigger 2amp charging.
Click to expand...
Click to collapse
Yes I also found that shorting these lines did not enable the 2amp charging mode. Also I found that many chargers are designed to charge Apple devices and they put 2V on one data pin and 2.8V on the other, but this also will not enable 2amp charging on the Samsung 8.9. It turns out that the Samsung charger puts both data pins were at about 1.2V which is necessary to cause the Galaxy tab to report its status as "Charging (AC)".
I built an adapter cable (see attached schematic and pictures) which insures that the data pins are at the expected 1.2V. With this cable in place the Galaxy tablet reports its status as "Charging (AC)" when I hook it up to any of my high current wall or auto chargers regardless of which device the charger was designed for.
~Paul

also you can read my tests here

Need help with unresponsive USB port

My Z3C's USB port has become unresponsive, it wont charge the phone nor connect to a computer.
The phone itself works as it should, apart from the USB.
It does sense that it is plugged into a charger when in an off state and boots into the battery charging screen however no charging takes place and there's no animation of the battery icon or change in the percentage. The magnetic charging port does work though.
I can't get my computer to recognise the phone in either standard mode, fastboot or flash. However when connected by USB I can get the phone into fastboot (steady blue) or flash mode (red/green flash), it's just my computer doesn't pick up anything.
I've tried several cables, chargers and computers so all that can be ruled out.
I've verified the continuity between the end of the USB port (that connects to the computer/charger) to the pins soldered to the main board of the phone. Everything seems fine. I reflowed the solder of the USB connector just to be sure.
I'm at a loss, anyone got any ideas?

doby_p said:
My Z3C's USB port has become unresponsive, it wont charge the phone nor connect to a computer.
The phone itself works as it should, apart from the USB.
It does sense that it is plugged into a charger when in an off state and boots into the battery charging screen however no charging takes place and there's no animation of the battery icon or change in the percentage. The magnetic charging port does work though.
I can't get my computer to recognise the phone in either standard mode, fastboot or flash. However when connected by USB I can get the phone into fastboot (steady blue) or flash mode (red/green flash), it's just my computer doesn't pick up anything.
I've tried several cables, chargers and computers so all that can be ruled out.
I've verified the continuity between the end of the USB port (that connects to the computer/charger) to the pins soldered to the main board of the phone. Everything seems fine. I reflowed the solder of the USB connector just to be sure.
I'm at a loss, anyone got any ideas?
Click to expand...
Click to collapse
if phone has warranty use it, i had this problem in some phones sometimes mic fails as well and I had to change usb flex for galaxy s2 and 3. Sometimes is for humidity on usb flex.

I've just been inspecting the mainboard closely near the usb port and I think there's a component missing. No idea how it has become detached.
The phone is an ebay salvage project, but I'm sure when I received it I could charge it fine through the USB port although it wasn't soon after that it started having problems. Now I'm doubting myself that it ever charged in the first place.
Anyway I'm now looking for a high res photo of the Z3C mainboard (battery side). I've got a dead Z1C with the same components near the USB port but as the components are arranged in a different orientation I'm unsure of which way round to solder it to the Z3C.
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Edit: Found the pic I was looking for in the service manual, soldered missing component in place and it's now working!

Battery Jumper / connector way xperia1 ii

Hi, can anyone advise how to identify contacts tocreate a battery jumper ? Battery connector on boardis dead, I need to connect replace contacts. SonyXperia 1 II, XQ-AT51 . Thanks

Hi, battery jumper already done, xperia works. But it doesn't charge. It can't even connect to the PC with a cable. It won't charge, no charging light or anything. Any ideas? All cables are connected correctly.

O next problem, fake charging
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m is..

I, at least, have no idea what you are talking about.
What are you doing? Show a photo of your wiring.
Are you trying to power your device without a battery?

The battery is connected, but the charging does not work

So in more detail, the contacts = Th, BS, ID, P+ P-, are connected exactly at the place of the connector. The phone shows 0% battery and does not charge, cannot be turned on, but gives a signal when connected to the charger. Battery voltage is 3.70v. If I disconnect the "ID" contact, the phone turns on and shows 20% battery. But it also does not charge, but after connecting to the charger, it makes a sound notification about charging. It shows 20% status even if the battery has both 3.85v and 3.70v
Where is a problem?
Flex cable?, resistor, battery.?

Are you running the battery on an extension cable?
Are you using an incompatible battery?
What is a "battery jumper"?
5 posts and still nobody knows what you are talking about.

Renate said:
Are you running the battery on an extension cable?
Are you using an incompatible battery?
What is a "battery jumper"?
5 posts and still nobody knows what you are talking about.
Click to expand...
Click to collapse
-yes
-no, i using original sony.
- battery jumper is connecting battery with motherboard , if connector on motherboard is broken.

Photo, please.

Renate said:
Fotku, prosím.
Click to expand...
Click to collapse

I would presume that you're destroyed the PCB, lifted pads, broken vias and that there is enough flux/contamination/gook that it's all shorted.
That's if we even presume that you've got the wiring correct.
You may never get that to charge. You'd be lucky if you can make this thing run off a power supply.
You can try cleaning very carefully the PCB with isopropyl alcohol and cotton swabs.
At least you'll be able to see better what you have.

New wiring problem same. I need a hardware skill person. The battery voltage is 3.95v. Ampere app shows 7.99v.
There is no short circuit!

Your NTC is open.

try to get the pcb data for made the proper connections

Renate said:
Your NTC is open.
Click to expand...
Click to collapse
Ntc resistor? Will a new battery fix this?

It's probably your wiring, not the NTC.

tutibreaker said:
try to get the pcb data for made the proper connections
Click to expand...
Click to collapse
I have been searching for over three weeks with no success. There is no schematic for the XQ-AT51 anywhere.

NiaNils said:
There is no schematic for the XQ-AT51 anywhere.
Click to expand...
Click to collapse
No, you're not ever going to find any schematics for anything.
Take a 10k resistor and connect one end to a nice grounded shield.
Touch the other end to the wire that you think is the "Th".
Does the temperature go up to ~25°C?
If there is no change then the problem lies with the wire connection to PCB or PCB.
If there is a change then the problem lies with the wire connection to the battery pack or the battery.

Renate said:
No, you're not ever going to find any schematics for anything.
Take a 10k resistor and connect one end to a nice grounded shield.
Touch the other end to the wire that you think is the "Th".
Does the temperature go up to ~25°C?
If there is no change then the problem lies with the wire connection to PCB or PCB.
If there is a change then the problem lies with the wire connection to the battery pack or the battery.
Click to expand...
Click to collapse
What resistor should I use exactly? How many Watts? Thanks for help

NiaNils said:
What resistor should I use exactly? How many Watts? Thanks for help
Click to expand...
Click to collapse
Mmm, (5V^2) / 10,000 ohms = 2.5 milliwatts.
So any power resistor will do. A 1/4W resistor has 100 times the power rating necessary.
10,000 ohm should be 25°C.
If you don't have one, you can use another resistor, but keep it sane, from 2200 ohm to 22,000 ohm.