Phone requires usb power to boot up? - Samsung Infuse 4G

Hey all,
Recently my friends infuse has been giving problems whenever he tries to boot up the phone from an off state. All you see is the battery charging animation and then the phone just turns off again, As soon as the phone is plugged into usb power (either wall or PC) and the power button is pressed, it proceeds to boot up just fine. I've swapped batteries as well and that doesn't fix it. So I'm guessing this has something to do with the contacts/mainboard? Any help is appreciated.

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Prophet isn't bircked, but can't reflash?!

Hi,
Was trying to reflash my Jammin and after it completed and reset, it wouldn't boot with the USB cable plugged in. The screen flashes white, and both LEDs flash simultaneously (red for the top LED, and blue for the bottom), and this is repeated in a boot loop.
A similar thing happens when I unplug the USB cable and press the power button, except that it only happens once then turns off.
However, if I plug my mains power charger in I can get into the boot loader (so it's not bricked) and can in fact boot into the new ROM (Button ROM). Interestingly, in settings the battery indicator says there is 0% battery.
Now I don't think this is a battery problem. I have tried a friends fresh battery and the same things happens. By going into boot loader and switching off with the power button I have also got the original battery to fully charge (until yellow LED turns green).
Here is the thing that has me really frustrated. I can boot into windows (using the mains power cord) and during the boot can change to the USB cord (no reset and boot cycle). So Windows works with the USB in and Activesync detects the phone. However, when I try to reflash to another ROM the update software throws the following error: Error [220] mains battery power, because it reads the battery is less than 50%!!
Please help me!! Any ideas are appreciated.
Gavin.
I'm thinking that I may be able to solve this with the "cutting the mains charger wire trick." This will hopefully provide the necessary power while flashing, and allow me to have a USB/activesync connection at the same time.
Any thoughts before I destroy a perfectly good charger?
well seems I've solved it with a bit of surgery. used this method: http://forum.xda-developers.com/showthread.php?t=319636 and it boots into my new ROM!! Yay!

[HELP] Stock 5.0.1 phone power up issue

Hello,
I flashed the latest LRX22C image on my nexus 5 today.Had flashed it clean,wiping data,cache and system etc except the Internal Storage.Then I flashed the SUPERSU 2.37 ZIP .Everything was fine for about 4 hours.Then suddenly when I pressed the power button to turn the screen off,it was not turning off and the "Switch off" mode was popping up instead .Then, when I got a call,it switched off.The phone won't turn on again.It starts,the Google Boot Splash appears and the bootanimation starts for like 2 seconds and it switches off.Same thing for bootloader mode.
Please Help me!
EDIT: Now its turning on by itself and switches off in 2 seconds!
Sounds like a bad power switch to me, but of course that is just my opinion. :good:
sounds like a mech issue.
legit isue
I have the same problem on mine now... Basically my phone powered down around 45%. Battery. At the time i thought it was dead... But it wasnt. When i would plug into external power, either usb or through wireless charging it would power cycle continuously at the android splash screen.... (1 to 2 second intervals - even if i booted into fastboot) Interestingly it would never go to the battery charging mode. But automatically boot on charge... It did this for about 6 hours then i gave up and left it unplugged for a day. I plugged it back in and it started power cycling again, however this time on its third boot it came back to life . thats when i discovered i still had 40% battery... I dont know what exactly made it boot but it did. Oddly also on boot, it started optimising apps and finishing install again. I checked the md5 before I installed the update so no issue there. Since it powered up i have powered the phone off using the power button long push and let the phone power down. After doing this when i plug the phone in to usb charge it goes to the charge screen. No issue. That said, if i try to power up while tethered and charging it will not allow it. It just stays at the charge screen. As soon as i unplug the usb the power button allows the phone to power up and work... When booted up it charges as normal when plugged in. Im convinced there is an issue with the power management drivers or drivers for the button controls. My phone worked fine until the 5.0.1 update was installed. On my nexus 5. Anyone else or just us two? Ive had a hard time finding people posting on this issue.

[Q] One S wont charge or turn on

Woke up one morning and the phone was stuck on the startup screen. Turned it off, and when I rebooted, it still was stuck on the startup screen. Then, after a day or two, it would not reboot at all. no red light when plugged in charger. also when its plugged to pc, pc is making sounds like its plugged and then unplugged many times. is it possible to fix it? or its dead motherboard?
Are you able to access the bootloader?? By pressing volume down and the power on button simultaneously while no cable is connected to the phone?

2n Gen Moto G Boot Loop / Won't Start HELP!!

I have a 2nd Gen Moto G that was pretty much in mint condition & prior to yesterday it showed no signs of any potential problems. Then last night the screen completely froze & wouldn't allow any input. The phone then shut itself off & I figured it would just restart & be fine. Instead it went into a constant boot loop where it reaches the white "M" animation screen then shuts right back down. I played around with it for a few hours today & did a ton of searching on the internet with no results.
I also should state that the battery did not die when this happened. I mention that because there were some posts where people let their battery go completely dead then they couldn't get their Moto G to power back on, however that was not case for me as the battery had well over 50% charge when this happened.
Things I have tried in order to fix this:
Using a different charger (both wall and USB to the computer).
-Holding down the power button for 7-10 seconds while plugged in.
-Holding down the power button for 7-10 seconds while not plugged in.
-Holding down the power button for 2 minutes or more (while plugged in and while not plugged in).
-Holding down the power button and volume up buttons until the phone starts (while plugged in and while not plugged in).
-Holding down the power and volume down buttons for 2 minutes or more (while plugged in and while not plugged in).
Now this step does bring up the fastboot menu however selecting any option in this menu just causes the phone to back into the boot loop. And yes I know how to access options in this menu (down volume to scroll & up volume or power button to select).
So basically everything just sends the phone into boot loop. Is the phone toast? Also I should mention that all day today it would randomly try to start itself & get to the Moto animation screen & then shut down & that was while it was sitting on the desk & I hadn't even touched it.
If the phone is toast is there any way I can access files like pictures by plugging the phone into my computer while the fastboot screen is up?
Alright so seeing as no one has any suggestions (understandably) & based on the searching I've done I'm assuming that the phone is just DOA. However does anyone know a possible answer to my second question which is, if the phone is un-savable is there still any way I can access files like pictures by plugging the phone into my computer while the fastboot screen is up?

Phone died

Was charging my phone and I saw it had a fb notification. As I clicked on it, the phone froze and then shut itself down after 10 seconds. Now the charging LED doesn't come on when plugged in and the phone won't boot up anymore. No combination of volume keys or power button does anything. When I plug it into my computer, it is recognized as "QHUSB_BULK" and won't let me access it in any way.
Any ideas or is it time to just bury this phone and upgrade?

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