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[Q] Brand new Nexus One can't be powered on

I have a brand new Nexus One bought on last year April. For some reason it wasn't to be used. Yesterday, I got it out of the package and charged it for ready to be powered on. Unfortunately, it reacted nothing as I pressed the power button! I took out the battery and put it into other Nexus One, it showed the battery was 100% charged.
I took back the battery and repacked it to this new Nexus One. I tried to press the power button more and more with data cable connected pc. Nothing happened. Just one time, the sceen lighted on and the "X" in four colors appeared! I didn't know why it was powered on. Maybe I pressed the trackball or volume up/down buttons, God know it.
The X sceen lasted almost for ten minutes and then sceen was off! Yes. It shutdown! I can't power it on anymore!
It seemed the hardware was OK. It may be the locked by the outdate android system. The android prestored in this phone is version 2.1.
Any advice is welcome. Thanks.

Can u you go in fastboot? Press power button+trackball..if so then you can recover your phone by unlocking bootloader and falshing custom recovery.

Sadly, It can't be power on and go in fastboot by pressing trackball+power button.

Any more advice?

Check the battery terminals just to make sure they're not dirty.. Sadly, you MUST be able to at least be able to boot something (hboot/fastboot) in order to troubleshoot anything software related. Sounds like you've got a hardware issue that could be one of (literally) a million things.
Sell it on EBay for parts. You can probably get $50-$60

you could try pressing pwr/vol-/trackball all at same time, hold down for around 30 seconds to make sure
commonly known as 3 finger salute
try power on without sdcard by manual methods and plugging in and plugging in with no battery

I have seen a video on YouTube on how to fix the power button which is known for messing up and how to turn it on. Search YouTube
Sent from my Nexus One using XDA App

is it that the power button is not working? that would be weird for a new phone though.
have you tried to turn it on using the "jump start" method?
connect the cable. led the charging led come on. remove the battery, wait for the led to go off (while cable is still connected) then pop the battery back in.
see if you can get it to start that way

When you plug charger cable in your Nexus, does the orange or green LED go on?
If one of them does and stays (green for full battery, orange otherwise) - then your problem is most likely the power button. It may not be the only problem, but at least the one that's stopping you from turning on your phone. You can try "jumpstarting" it by inserting battery while charger is connected.
If you don't see LEDs when plugged in - your phone is done.
If you see blinking LEDs - battery terminals might need cleaning/fixing, it usually happens when the battery is out of the phone.

won't turn on/can't select any boot options

I have a new Motorola Atrix HD. I was using it and the screen went black. i hit the power button to unlock but nothing happened. i plugged it in but nothing happened. i took the back off to see if the battery was disconnected. I didn't know the battery was different than other phones and ripped the power cord connecting the battery to the phone when i took it out. lesson learned. Ordered a new battery and installed correctly. phone won't turn on. The green charge light blinks when i plug it into the wall and then stays on for about 20 seconds and then the phone tries to turn on but while the motorola icon is illuminated, it cuts back out and repeats the cycle. I left it plugged in for a couple hours and still the same thing. i tried holding in power and volume buttons for the boot screen. if i do that just as the phone attempts to turn on i can get the screen up and scroll the list of boot options with the power buttons but i can't select any of them and the phone cuts out after the same amount of time. Everytime. When i plug it into my laptop, the light blinks on and then stays on like with the wall, but the phone doesn't attempt to power up. Please, any help would be greatly appreciated. i have read a lot of forums where the battery was acting up because of the chargers people were using. The difference between my situation and those of the people i read about is that my boot screen cuts out and cannot be used. This all happened 2 days after my exchange period ended and because i took the back off myself, best buy won't have anything to do with me so i'm on my own and cannot afford another phone right now. Thanks in advance for your time and concern.

katlic said:
I have a new Motorola Atrix HD. I was using it and the screen went black. i hit the power button to unlock but nothing happened. i plugged it in but nothing happened. i took the back off to see if the battery was disconnected. I didn't know the battery was different than other phones and ripped the power cord connecting the battery to the phone when i took it out. lesson learned. Ordered a new battery and installed correctly. phone won't turn on. The green charge light blinks when i plug it into the wall and then stays on for about 20 seconds and then the phone tries to turn on but while the motorola icon is illuminated, it cuts back out and repeats the cycle. I left it plugged in for a couple hours and still the same thing. i tried holding in power and volume buttons for the boot screen. if i do that just as the phone attempts to turn on i can get the screen up and scroll the list of boot options with the power buttons but i can't select any of them and the phone cuts out after the same amount of time. Everytime. When i plug it into my laptop, the light blinks on and then stays on like with the wall, but the phone doesn't attempt to power up. Please, any help would be greatly appreciated. i have read a lot of forums where the battery was acting up because of the chargers people were using. The difference between my situation and those of the people i read about is that my boot screen cuts out and cannot be used. This all happened 2 days after my exchange period ended and because i took the back off myself, best buy won't have anything to do with me so i'm on my own and cannot afford another phone right now. Thanks in advance for your time and concern.
Click to expand...
Click to collapse
Is it possible that the that connection between the power cord and the phone itself is loose or damaged? I'm just guessing here as I have never opened up the back of my phone.

I would check your battery terminals then leave it to charge if it does. You could also try a factory cable. Another thing would be to try fastboot while connected to your laptop and see if it stays on, and if it does, try reflashing all partitions.
Sent from my MB886 using xda premium

Xperia Z without LCD

Hello, I cracked digitizer of my Xperia.
So I took it apart and wanted to fix it.
I heated, took LCD and digitizer off, tried to separate them nicely, but I'm pretty sure I made a little bit of damage to LCD.
Anyway, now I wanted to try phone without screen before ordering parts (you know, maybe I damaged motherboard or something... )
So... I plug all the cables, make everything back except digitizer is off now, but LCD is on.
I try to turn it on, it vibrates and that's it. Nothing more and after waiting over 10 minutes it still doesn't show any signs of life. Plugging USB cable from PC or ac does not show any signs. I can't do anything until I unplug battery and plug it back.
If I try to stick USB cable before turning it on, red led flashes brightly and that's it. What's even more interesting, if I unplug the cable, led keeps flashing and I have to unplug battery again.
I can see green led flash for a second when holding volume up and plugging to PC and blue led keeps for long time if I plug to PC while holding volume down.
So now you know my situation, does it have to be like that or no?
Maybe there's a back signal from LCD I mean if it's not connected, phone does not work or something.
Before everything phone was working perfectly.
Hope to hear some advice, thank you.

martis347 said:
Hello, I cracked digitizer of my Xperia.
So I took it apart and wanted to fix it.
I heated, took LCD and digitizer off, tried to separate them nicely, but I'm pretty sure I made a little bit of damage to LCD.
Anyway, now I wanted to try phone without screen before ordering parts (you know, maybe I damaged motherboard or something... )
So... I plug all the cables, make everything back except digitizer is off now, but LCD is on.
I try to turn it on, it vibrates and that's it. Nothing more and after waiting over 10 minutes it still doesn't show any signs of life. Plugging USB cable from PC or ac does not show any signs. I can't do anything until I unplug battery and plug it back.
If I try to stick USB cable before turning it on, red led flashes brightly and that's it. What's even more interesting, if I unplug the cable, led keeps flashing and I have to unplug battery again.
I can see green led flash for a second when holding volume up and plugging to PC and blue led keeps for long time if I plug to PC while holding volume down.
So now you know my situation, does it have to be like that or no?
Maybe there's a back signal from LCD I mean if it's not connected, phone does not work or something.
Before everything phone was working perfectly.
Hope to hear some advice, thank you.
Click to expand...
Click to collapse
Its looks like a mo-bo issue for USB and LED issue. Check whether all connectors are in place.Also for digitizer issue i thing either the connector is not properly attached or the flex cable is damage.

Any more opinions?

[Q] HTC One Will Not Charge

My HTC One had a full discharge a couple days ago.When I got home to plug it in, it showed a blinking red LED and the battery charging animation, but didn't charge at all over a full day. I tried rebooting while still plugged in to the wall charger, which took me to the OS. From the OS I could do anything -- text,call, use Chrome, etc -- but the battery symbol had an exclamation point and the LED was still blinking red. As soon as I took it off the charger, it turned off.
I have tried Power + Volume Down, Power + Volume Up + Volume Down, and the bright light methods.
I was able to restore the phone to a previous backup from TWRP while plugged in, but the problem continues.
Any suggestions?

yelmelnobrainer said:
My HTC One had a full discharge a couple days ago.When I got home to plug it in, it showed a blinking red LED and the battery charging animation, but didn't charge at all over a full day. I tried rebooting while still plugged in to the wall charger, which took me to the OS. From the OS I could do anything -- text,call, use Chrome, etc -- but the battery symbol had an exclamation point and the LED was still blinking red. As soon as I took it off the charger, it turned off.
I have tried Power + Volume Down, Power + Volume Up + Volume Down, and the bright light methods.
I was able to restore the phone to a previous backup from TWRP while plugged in, but the problem continues.
Any suggestions?
Click to expand...
Click to collapse
Try connecting the phone to your computer's USB port. If it charges there, then your charger is bad. You can check to see if is charging by going to Settings -> Power on the phone. If you are using the cable from your charger to connect to the computer and it isn't charging then try another cable. It that works, it may just be the cable that is bad and the rest of the charger is OK.

majmoz said:
Try connecting the phone to your computer's USB port. If it charges there, then your charger is bad. You can check to see if is charging by going to Settings -> Power on the phone. If you are using the cable from your charger to connect to the computer and it isn't charging then try another cable. It that works, it may just be the cable that is bad and the rest of the charger is OK.
Click to expand...
Click to collapse
I have tried multiple cables, including the HTC stock cable and charger. When I plugged the phone into my computer, it did not show the blinking red LED and did not power up. The phone was basically unresponsive. I assume this is from lower amperage from the laptop's USB ports, but could be wrong. The laptop was also plugged into its charger at the time.

yelmelnobrainer said:
I have tried multiple cables, including the HTC stock cable and charger. When I plugged the phone into my computer, it did not show the blinking red LED and did not power up. The phone was basically unresponsive. I assume this is from lower amperage from the laptop's USB ports, but could be wrong. The laptop was also plugged into its charger at the time.
Click to expand...
Click to collapse
The battery is severely discharged. Since, it will not charge via the charger or the computer it looks to be a phone hardware issue. You probably need to take it back to your dealer for servicing. Before you do that, give the connection to the laptop one more go except leave it on the for about an hour or two undisturbed. When batteries are severely discharged, it takes a while for it to recharge enough to give any indication of life.

I ended up sending the phone to HTC. I had modified the kernel and OS, but figured it was worth a shot since the phone was dead and it was still under warranty.
They told me it was out of warranty due to liquid damage. I have no idea how it may have been liquid damaged, but oh well. I wasn't going to pay the $200 to replace the motherboard so I asked them to send the phone back to me.
I received the phone last week and plugged it in. I wanted to make sure I could repeat the symptoms and that HTC hadn't further messed up the phone before I took it to a local repair shop. But what happened when I plugged it in? It came to life and began charging as normal. Either a generous HTC tech fixed my phone for free or the phone needed some interior jostling to get circuits back to normal.
Whatever the situation, my phone has been good as new with all the data just as I left it. For a full week, I've had no problems charging.

[Q] Strange (hard?) brick

Hi,
After many years of enjoying this magnificent phone the disaster came.
The phone discharged overnight and switched off. In the morning I had to send some texts, so plugged the wall charger into USB socked (a weak one ~500mA), after few moments a charging icon appeared and stated that battery has 1%. Ok, I really had to send those messages: I've pressed the power button and phone started to boot.
Sony logo: OK, purple wave, OK...
After 10-20 seconds it suddenly switched of, red LED started to blink.
I thought: OK, system startup needs a lot of power, maybe a charger is too week to keep up.
So I left phone for few more minutes to charge, but without success.
That was the last time I saw screen was on.
Phone is a C6903, running on a stock, rooted 14.6.A.1.236 with the recent XZRecovery.
Bootloader has been unlocked.
For the moment I've tried everything but opening back and doing the testport-trick.
When I connect the power only red led blinks (I left the phone charging overnight, no change).
When I try to enter flash mode: nothing happens but red blinking light.
When I try to start phone nothing happens at all.
But there is still hope:
I connected the phone to 2A charger using a magnetic cable.
Then I've connected normal USB cable to my PC, strange thing started to happen:
When I pressed volume Up (even after few minutes of connecting power+usb) the phone suddenly jumped to fastboot mode (blue led, it was discovered by PC, fastboot terminal was functional)
When I press power button, phone vibrates for a second, then the led pattern changes to: 1s red followed by 0.1s green, then long red, then it repeats...
I'm still unable to enter any recovery nor flashmode...
I'd really appreciate any help, have you got any ideas left how can I revive my phone?

Qba_S said:
Hi,
After many years of enjoying this magnificent phone the disaster came.
The phone discharged overnight and switched off. In the morning I had to send some texts, so plugged the wall charger into USB socked (a weak one ~500mA), after few moments a charging icon appeared and stated that battery has 1%. Ok, I really had to send those messages: I've pressed the power button and phone started to boot.
Sony logo: OK, purple wave, OK...
After 10-20 seconds it suddenly switched of, red LED started to blink.
I thought: OK, system startup needs a lot of power, maybe a charger is too week to keep up.
So I left phone for few more minutes to charge, but without success.
That was the last time I saw screen was on.
Phone is a C6903, running on a stock, rooted 14.6.A.1.236 with the recent XZRecovery.
Bootloader has been unlocked.
For the moment I've tried everything but opening back and doing the testport-trick.
When I connect the power only red led blinks (I left the phone charging overnight, no change).
When I try to enter flash mode: nothing happens but red blinking light.
When I try to start phone nothing happens at all.
But there is still hope:
I connected the phone to 2A charger using a magnetic cable.
Then I've connected normal USB cable to my PC, strange thing started to happen:
When I pressed volume Up (even after few minutes of connecting power+usb) the phone suddenly jumped to fastboot mode (blue led, it was discovered by PC, fastboot terminal was functional)
When I press power button, phone vibrates for a second, then the led pattern changes to: 1s red followed by 0.1s green, then long red, then it repeats...
I'm still unable to enter any recovery nor flashmode...
I'd really appreciate any help, have you got any ideas left how can I revive my phone?
Click to expand...
Click to collapse
Hi, this just happened to me, my phone has been dead for over 4 weeks with just the red led blinking. i tried the test point thing with no success at that point I gave up but last week i decided to get a new genuine battery and it worked it booted up. Your battery is just completely dead thats why it won't boot up!

tilakpatel22 said:
Hi, this just happened to me, my phone has been dead for over 4 weeks with just the red led blinking. i tried the test point thing with no success at that point I gave up but last week i decided to get a new genuine battery and it worked it booted up. Your battery is just completely dead thats why it won't boot up!
Click to expand...
Click to collapse
Thanks for the info! I've ordered a replacement battery already.
I'll open my phone today and measure all voltages. I'll keep you updated.

Good luck

tilakpatel22 said:
Good luck
Click to expand...
Click to collapse
Yup! That was it (at least I think so, I don't have new battery yet)
The Al part of positive battery terminal was broken: I have no idea why, maybe because of age, oxidation and high currents that were drained from this LiPo cell...
Anyway I've managed to temporarily join two broken Al parts, kernel and recovery booted successfully.
Now I need to wait for a replacement battery.
Phone is alive again, thanks tilakpatel for help!
But the magnetic cable trick might be useful in other hardbrick cases: just connect magnetic charger, connect normal USB cable to PC and hold volUp. Phone should be able to enter fastboot even with completely drained battery...

Qba_S said:
Yup! That was it (at least I think so, I don't have new battery yet)
The Al part of positive battery terminal was broken: I have no idea why, maybe because of age, oxidation and high currents that were drained from this LiPo cell...
Anyway I've managed to temporarily join two broken Al parts, kernel and recovery booted successfully.
Now I need to wait for a replacement battery.
Phone is alive again, thanks tilakpatel for help!
But the magnetic cable trick might be useful in other hardbrick cases: just connect magnetic charger, connect normal USB cable to PC and hold volUp. Phone should be able to enter fastboot even with completely drained battery...
Click to expand...
Click to collapse
no problem