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[Q] powering on issue, unique.

so I got a Samsung captivate from my friend. and was planning on rooting it and either using it as a game phone. or giving it to my friend.
background :
most likely has water damage. was out in a damp area.
finicky micro USB port.
issue :
will not boot with out USB cable plugged in.
boots just fine into 2.2, with cord plugged in, already got phone rooted and everything else works fine, just that odd boot issue.
Question :
Anyone know why this could be going on, I'm thinking water damage but I remain skeptical.

Just curious what exactly you mean by it won't boot ... Like you get no response at all, or it stays on the at&t screen, or what?

yeah, when the USB cord is unplugged and I hold down the power button, it stays at a black screen.
but when the USB cord is unplugged and I hold down power, volume up and down. it flashes a battery every 5 or so seconds with a loading icon in the middle. when I remove thumb from the power button it all goes black again.

[Q] RIP to my Sidekick

So today, as i was on my way to work I accidentally held down the lockscreen button and the power menu popped up (I was on Glorious Overdoes V2) in the middle of a text and i pressed reboot accidentally... My phone never rebooted... It was stuck on the black Sidekick 4G/T-Mobile screen and then it would go black, then once again that screen would pop up... I removed the battery and put it back in, and without me pressing any buttons the same screen came back up... I let it sit for a while and after 20minutes nothing changed except the phone got really hot. Luckily I had my OLD Nokia in my car and popped my SIM card in it so that i could continue having a phone. I let The Sidekick sit for 4hours and it was extremely hot and then eventually it just turned off completely (Im assuming the battery drained, it was at 90% 4 hours before.) I got home, plugged it in and it wouldn't even turn on the charging screen. Somebody told me that my Motherboard is fried but I don't know. I called T-mobile and they're going to send me a new phone since it's still in the 1-year warranty period.
Anyone know if they're going to be able to inspect my old device and find out if i rooted/flashed it? because i can't get into it or anything to ODIN

I feel like they will try putting a new battery in it, and if it still wont turn on you should be fine.

It got hot because the CPU was churning over something and couldn't enter a low power state. I bet you could coax the phone into download mode and reflash it.

what do you mean coax the phone into download mode? by using the button combo to get it into download mode when turning on? I've tried that and it doesn't work. I tried rebooting into recovery and that wont work either. Also, it wont charge the battery anymore...

I've always had a hard time getting into download mode, and my phone works fine. I just spent 5 minutes trying different combinations until I got it.
I've heard people say trackpad-power button, volume down-home-power button, volume up/down-put battery in-plug in USB, etc etc etc. But the only method that works for me is to put in the battery, plug in the USB, wait for the charging screen, then hold volume down-trackpad-power, releasing power as soon as the screen goes black
You say your phone is turning on as soon as the battery is inserted? What if you have it plugged into USB first?

I had the exact same problem, I sent it into samsung and they just replaced a part(never told me which one) and it was fixed. I did noticed that when the sccreen was poped open to show the keyboard, it would stop. But it's probably a loose cable like I've read before.
Sent from my SGH-T839 using Tapatalk

Worst case scenario if you can't figure it out here on XDA, you could always sell it on eBay for parts as defective.

Samsung galaxy s6 wont turn on

Hello im repairing an samsung galaxy s6, which was dropped in water by a firend(for cca 2 seconds). I told him to turn it off, and i cleaned it with alcohol when i got it in my hands. Now i do not know what to do, . When i plug it in my charger and try to turn it on, i get a blue light but just a black screen nothing happens. When i reset the phone( soft reset) there is a red light while charging but nothing happens on the screen. When i connect it too a pc it recognises a device but it cant load the drivers of the device. What could be wrong with it ? Could it be the battery, i cant get it to turn on

zazbano said:
Hello im repairing an samsung galaxy s6, which was dropped in water by a firend(for cca 2 seconds). I told him to turn it off, and i cleaned it with alcohol when i got it in my hands. Now i do not know what to do, . When i plug it in my charger and try to turn it on, i get a blue light but just a black screen nothing happens. When i reset the phone( soft reset) there is a red light while charging but nothing happens on the screen. When i connect it too a pc it recognises a device but it cant load the drivers of the device. What could be wrong with it ? Could it be the battery, i cant get it to turn on
Click to expand...
Click to collapse
It does not matter if you turn it off straight away, the battery IS STILL CONNECTED inside the phone so any water inside will continue to damage the components. It is impossible to say what the damage is at this stage without taking the phone apart and testing each component.
Leave the phone somewhere warm to dry out completely, if after a few days it still does not turn on then the phone is broken.

cooltt said:
It does not matter if you turn it off straight away, the battery IS STILL CONNECTED inside the phone so any water inside will continue to damage the components. It is impossible to say what the damage is at this stage without taking the phone apart and testing each component.
Leave the phone somewhere warm to dry out completely, if after a few days it still does not turn on then the phone is broken.
Click to expand...
Click to collapse
ive analysed the phone and the screen is 100% broken , i will replace it, i think the screen is broken + the phone is bootlooping ill report back when i repair it

(Help)Hard bricked U11

Never thought I would run into this moment that I need to ask for help on the forum, but I guess this is my last hope.
Here's the story:
I was on Oreo firmware and thinking of going back to Nougat because there are some apps only work on Nougat at this moment and I overall prefer Nougat design.
My phone was on S-off so I thought it would be perfectly fine for me to just flash Nougat firmware then flash the Nougat rom I desired like the good old days.
So then I launched Sunshine app, passed the compatibility test and the phone rebooted to download mode with S-off shown, everything was working fine so far.
And here was the problem happened, I typed in the command"fastboot flash zip firmwareXXX.zip".
Terminal showed error needs to reboot and flash again immediately as normal, the phone rebooted but never come back to download mode.
Now it only stays on black screen, if I tilt the phone a bit I can see the backlight glowing.
I've tried hard reset by holding power and volume down, it will reboot but still stays on black screen, neither system nor bootloader is accessible.
Even plugging to the computer detects nothing, not even QHSUSB_BULK mode.
However, the phone is able to charge though, I hook up the usb cable with a digital meter and it shows 5 volts and 0.5 amp.
I'm running out of solutions, I've searched through the entire forum and see no one has the similar experience.
This is the first time I hard brick a phone, been a loyal HTC user since good old Desire HD days.
If anyone has experience or solution for this, a kindly help is appreciated, thanks!

shasen1235 said:
Never thought I would run into this moment that I need to ask for help on the forum, but I guess this is my last hope.
Here's the story:
I was on Oreo firmware and thinking of going back to Nougat because there are some apps only work on Nougat at this moment and I overall prefer Nougat design.
My phone was on S-off so I thought it would be perfectly fine for me to just flash Nougat firmware then flash the Nougat rom I desired like the good old days.
So then I launched Sunshine app, passed the compatibility test and the phone rebooted to download mode with S-off shown, everything was working fine so far.
And here was the problem happened, I typed in the command"fastboot flash zip firmwareXXX.zip".
Terminal showed error needs to reboot and flash again immediately as normal, the phone rebooted but never come back to download mode.
Now it only stays on black screen, if I tilt the phone a bit I can see the backlight glowing.
I've tried hard reset by holding power and volume down, it will reboot but still stays on black screen, neither system nor bootloader is accessible.
Even plugging to the computer detects nothing, not even QHSUSB_BULK mode.
However, the phone is able to charge though, I hook up the usb cable with a digital meter and it shows 5 volts and 0.5 amp.
I'm running out of solutions, I've searched through the entire forum and see no one has the similar experience.
This is the first time I hard brick a phone, been a loyal HTC user since good old Desire HD days.
If anyone has experience or solution for this, a kindly help is appreciated, thanks!
Click to expand...
Click to collapse
Have you held the power and volume down button both together for exactly 1 minute,
I have a u11 that took for ever to reboot with corrupt os youll notice the capacative buttons start flash if its doing something or going to reset after about 30 seconds if not and nothin happens
Take the backing off and unplug the battery,
To do this heat the backing up with a hair dryer and get some really fine guitar picks, work your way arround slowly, in my case the U11 was not glass backed only plastic and was original backing ive heard they are glass now though so be careful,
Now with the backing off and exposed, take all of the 5 or 6 screws out from the plastic ariel cover with NFC chip attached (chip is gold bend it up off battery it is not glued down)
Then from the left of the device at the bottom of the plastic cover with ncf chip on it you should see a slight gap where the vibration motor is located and sits
Get a rounded pair of tweezer and insert just the tip into the opening and very carefully pry it up, it make take a while as some of the adhesive from the backing will be holding it down,
After that is off you have now exposed the devices PCB,
From the battery youll see the connector making its way to the PCB port disconnect it and reconnect it now try to boot directly to download mode with
Power
Volume down
Both at the same time, if this did not work the disconnect the battery again and wait 24hrs for the static electricity to disperse and try again, had this work on a completely frozen unresponisve evo 10 and u11 + and also my U11
Still no luck id say the emmc on the board has gone haywire either that or possibly one of the thermal transistors has blown in which youll see either black and burnt or white and powdery,
Im a phone tech you shouldnt have any problems doing all this just take your time,
Good luck mate

Matty1993 said:
Have you held the power and volume down button both together for exactly 1 minute,
I have a u11 that took for ever to reboot with corrupt os youll notice the capacative buttons start flash if its doing something or going to reset after about 30 seconds if not and nothin happens
Take the backing off and unplug the battery,
Click to expand...
Click to collapse
I've tried holding volume down and power buttons both for around 5 mins, no capacitive button blinking.
However I can tell the phone reboots several times during the procedure by seeing the backlight goes black and light up.
And about the reconnect battery route, I guess I'll just do it anyway, since the repairing price might be the same as buying a new one.
Thanks for the reply, mate!

shasen1235 said:
I've tried holding volume down and power buttons both for around 5 mins, no capacitive button blinking.
However I can tell the phone reboots several times during the procedure by seeing the backlight goes black and light up.
And about the reconnect battery route, I guess I'll just do it anyway, since the repairing price might be the same as buying a new one.
Thanks for the reply, mate!
Click to expand...
Click to collapse
Sounds like the logic board is trying to initialize but there isnt sufficient power to boot it,
its kinda like when you take the battery out of a phone then plug it on to charge without a battery and there is nothing but a lit up black screen and nothing else happens as theres not enough power to boot, this sounds the same to me as there are no red or green light after the orange when plugged in,
Get a hair dryer and heat the back of the phone up a few times and then plug it into charge to see if you cant boost the cells back to life, do this a few times,
If no change id most certainly suggest removing your back cover and unplugging and replugging the battery, once unplugged leave it for a few minutes, then plug back this will refresh the chips (especially emmc as this contains your entire system and bootloader, including download mode, RUU mode)
as soon as battery is reconnected plug it in on charge and try to boot it to download mode straight away also look for any change in the batteries light colour and any blinking,
the orange light when first plugged in is normal but should blink once or twice only then change to a solid red for discharged and charging or solid green green when near on 100% charged
If the above does not work disconnect the battery for 24 hours and try again, this will fully drain any static electricity in the device that may be lingering,
If still nothing after the 24 hours buy an OEM battery from ebay and install yourself, once you have the back cover off youll see the battery takes up 3/4 of the phones actual internal size,
Same as the back cover get your hair dryer place a shamwow or thick cloth over the PCB board then heat the battery up (NOT TO MUCH THOUGH only so its hot to the touch), then with the really thin guitar picks again (they should be bendable easily and flexible) work your way around the battery to cut through the adhesive securing it down,
CAUTION be very very careful the adhesive is strong keep the battery heated at all times to avoid pericing the battery and or damaaging the lcd as this is what its secured to, just take your time and work slowly do not force it out, once all the adhesive is cut it will remove easily by using the guitar pick insert between battery and housing and gently turn the pick from left to right and will pop out, (you will see the battery move when using pick from left to right if not you havent cut the adhesive properly work around the battery once again until you get movement from it)
Sorry for the long reply haha but dont send it to htc they are absolute rubbish hope this helps ive tried to be as detailed as i can its actually alot harder trying to explain it than it actually is to do it

Matty1993 said:
Sounds like the logic board is trying to initialize but there isnt sufficient power to boot it,
its kinda like when you take the battery out of a phone then plug it on to charge without a battery and there is nothing but a lit up black screen and nothing else happens as theres not enough power to boot, this sounds the same to me as there are no red or green light after the orange when plugged in,
Get a hair dryer and heat the back of the phone up a few times and then plug it into charge to see if you cant boost the cells back to life, do this a few times,
If no change id most certainly suggest removing your back cover and unplugging and replugging the battery, once unplugged leave it for a few minutes, then plug back this will refresh the chips (especially emmc as this contains your entire system and bootloader, including download mode, RUU mode)
as soon as battery is reconnected plug it in on charge and try to boot it to download mode straight away also look for any change in the batteries light colour and any blinking,
the orange light when first plugged in is normal but should blink once or twice only then change to a solid red for discharged and charging or solid green green when near on 100% charged
If the above does not work disconnect the battery for 24 hours and try again, this will fully drain any static electricity in the device that may be lingering,
If still nothing after the 24 hours buy an OEM battery from ebay and install yourself, once you have the back cover off youll see the battery takes up 3/4 of the phones actual internal size,
Same as the back cover get your hair dryer place a shamwow or thick cloth over the PCB board then heat the battery up (NOT TO MUCH THOUGH only so its hot to the touch), then with the really thin guitar picks again (they should be bendable easily and flexible) work your way around the battery to cut through the adhesive securing it down,
CAUTION be very very careful the adhesive is strong keep the battery heated at all times to avoid pericing the battery and or damaaging the lcd as this is what its secured to, just take your time and work slowly do not force it out, once all the adhesive is cut it will remove easily by using the guitar pick insert between battery and housing and gently turn the pick from left to right and will pop out, (you will see the battery move when using pick from left to right if not you havent cut the adhesive properly work around the battery once again until you get movement from it)
Sorry for the long reply haha but dont send it to htc they are absolute rubbish hope this helps ive tried to be as detailed as i can its actually alot harder trying to explain it than it actually is to do it
Click to expand...
Click to collapse
hello buddy thanks for this help, i have the same problem as the OP, i followed your instruction now i have an orange LED light up but no change, i dont know if i can access download mode or not cause my screen still black. tried htc_fastboot flash recovery but it done with FAILED not allowed on PRODUCTION device.
what should i do now, please help me, and sorry for my bad english. Thanks a lots

HELP: Samsung S7 Not Starting after Wipe and Reset!

Hi All, the trusty S7 was a bit slow with tonnes of apps and download data - so I wiped the phone data via the Android system recovery menu (Home, Up and Power - followed by Wipe data/factory reset).
Phone was wiped and then rebooted successfully ("Welcome to Android" - Selected English as my language, followed by joining my Wifi network). After joining the Wifi the screen froze. I then tried a soft reset with the Volume Down+Power key - however the phone just went off and did not restart.
At the time the phone was a bit warm (Guessing due to the charge + wipining activity). Battery power was 100% when the phone started after the wipe and was in setup mode. I have left the phone to charge all night, but cannot power it on by either Power only, Volume down+power or Volume Up+Home+Power.
I really need to get the phone back up and running (If i can turn it on). ANY ADVICE or PC troubleshooting steps would be much appreciated!

Once you connect your phone to the charger, keep holding Volume Up + Home + Power, at this point, three things would happen:
Phone actually gets into Bootloader.
Phone blinks then shuts down.
Phone doesn't light up at all.
If the first case was true, try unplugging the charger, to check if the phone turns off or not (hardware issue or not).
If it turns off, then it's just like the other cases, you'll have to take off your back glass, and check your motherboard, or just unset, reset the components.

Nothing happens in any case, It's as though the phone has no power - but i am sure it does, was fully charged and was easily getting 12 - 14 hours battery when full.

g_patkar said:
Nothing happens in any case, It's as though the phone has no power - but i am sure it does, was fully charged and was easily getting 12 - 14 hours battery when full.
Click to expand...
Click to collapse
Then it's simple, tear your phone apart, it ain't that risky, I got Case 2 about a week ago, unseating, and reseating resolved the matter (after 4 days of struggling).

Hey what does seating / reseating mean? Sorry - not familiar with those words... Thanks.

g_patkar said:
Hey what does seating / reseating mean? Sorry - not familiar with those words... Thanks.
Click to expand...
Click to collapse
I mean, dismantle the back glass of your phone, then disconnect the small screws, remove the protective cover, remove the NFC board, and then dismantle the rest of the small devices such as the camera, earpiece, and motherboard.
Then re-install it, and if you notice something strange, tell me.
Do not forget to disassemble the battery as well, but never try to disassemble the main charging plate because it needs to disassemble the screen.