Evo 4g LTE no power - Sprint HTC EVO 4G LTE

Hey, new guy here.
So about 2 weeks ago my EVO 4g LTE's power button started acting crazy. I would have to push it really really hard to make it turn on. Sadly it has gotten to where now it just doesn't turn the phone on at all. I have since downloaded an app from the market to use the volume keys to turn it on from sleep mode, but cannot turn it off without being able to turn it back on (the app only supports waking the phone up). I've taken it apart, cleaned it and still no luck. No matter how hard I press it, it just won't turn on. The button also no longer gives that slight "click" when pressing it.
I ordered a new button, took it apart, replaced the button and still nothing. It still doesn't even click. I'm wondering what the part underneath the power button is called. Would that be the power button flex cable. I'm speaking of the part the button actually touches to produce the power on/power off effect and the mild click it gives when pressed.
I bought the phone used and when I took it apart, it appeared to be tampered with at this same location. It looked like this section had a black coating on it where the power button would touch but had been rubbed/scrapped off, showing copper.
If anyone knows what this part is please let me know so I can order/replace it.
Thanks in advance

Related

[Q] Crack+No touch response - what's broken.

I dropped the flyer yesterday which isn't uncommon and it seemed fine after and I used it normally for the rest of the day. This morning I picked it up noticed a crack and the touchscreen won't respond so I can't unlock it.
Power on and rotation is working fine but I can't manage a reset as it is locked.
I was about to scarper off and look at Nexus 7/Kindle Fire HD prices but checking here it might be a matter of a glass screen/digitiser replacement? Is this correct?
Sounds like digitizer to me.
You can try a factory reset from hboot, as hboot only uses the volume and power buttons to navigate.
Hold down power button until the Flyer powers off. When the screen is black, hold down the volume down rocker (don't let go of it, until I say so later). The Flyer will either reboot itself, otherwise you can press power for a few seconds and release to power on. Keep holding the vol down rocker, until the white hboot screen appears.
I ordered a replacement Digitizer and will attempt this when I have time. I was able to do a HTC sync so it seems to be alive but I'm reluctant to hard reset as the I'm probably losing the dat for nothing.

Phone will only power up for 7 seconds total

Had and still have an issue today. While driving earlier yesterday, I was listening to music in my car with phone connected on headphone jack. It made a buzzing noise( that came through car audio) , I disconnected and removed battery. I replaced battery and phone will not turn back on at all, will only show both Samsung logo's then go black screen. The phone will only power up for a total of 7 seconds from initial power up vibration on any combination of buttons,or even using a JIG
which went right into download mode.
- If I plug into power source , phone will just vibrate.
- I removed battery and replace, both Samsung logo's will appear then turn off.
- If I hold volume down + power button and place battery in, it will go into download mode. In this mode I can hit volume down to restart but it will just stay on black screen. Also if I hold these buttons down and do nothing the screen will just go black after a few seconds.
- I can also put into download mode to hook up to ODIN using same method and pressing volume up, but will say downloading then shut off.
- I've tried holding down volume up+down and power and it will not go into recovery.
- Odin with recognize it for a second (say device plugged in) and start to download files then it will say device unplugged after a few seconds
I've been looking at unbricking and unrooting threads with no luck. Any help is appreciated.
I don't know about the buzzing sound, but the rest sounds like a dead battery. Are you sure it's charged or that your charger didn't die on you? I don't believe phones brick after the flash is up and running.
Really now said:
I don't know about the buzzing sound, but the rest sounds like a dead battery. Are you sure it's charged or that your charger didn't die on you? I don't believe phones brick after the flash is up and running.
Click to expand...
Click to collapse
Yes I'm 1000% percent sure its not a dead battery and even had it at AT&T warranty center this morning having them look at it. I was trying my luck even though its out of warranty. This issue is like none I've heard, because of the fact that phone actually powers up and I can get into download mode within those 7 seconds, but will shut off after. I've timed it till it powers off.
Really now said:
I don't know about the buzzing sound, but the rest sounds like a dead battery. Are you sure it's charged or that your charger didn't die on you? I don't believe phones brick after the flash is up and running.
Click to expand...
Click to collapse
Stuck power button? Flick back or the phone a few times
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Am having this same issue with my girlfriends phone just as of a couple hours ago. It's completely stock and just recently received an OTA update a few days ago, she showed me bragging how she can watch videos and do other things at the same time now knowing how much I want a Note lol, she's had zero issues with it other than the battery getting very hot while charging a week or so ago and seems to be very slightly bulging now that I've looked at it. Out of nowhere today as we're walking through a parking lot and she's carrying it in her hand, not even using it, she says something is wrong with her phone and hands it to me with it vibrating every couple of seconds and not reacting to any buttons. I take the battery out and when we get inside put it back in and without even pressing anything it goes to the Samsung logo, black, animated Samsung logo, then turns off and goes back to vibrating every couple seconds. I look up the button combination for recovery and download mode and all that, I try recovery and it does the same vibrate every couple of seconds but never goes to recovery, and if I take the battery out, hold down volume down, then put the battery in it comes up with the warning about installing ROMs and all that, weather I press volume down or do nothing it stays at that screen for maybe five seconds then turns off and the only way I can get to the download mode is to take the battery out then press volume down. I have the Sprint Samsung Epic 4G and the batteries aren't the same but are very similar, mine is just shorter and 1500mAh, hers is taller and 2500mAh. So for the heck of it I put hers in my phone and hold it enough to where it connects and turn on my phone without issue, it boots up and shows 70% on the battery, I now have it plugged in and charging the battery at the moment with no issues. I put my battery in her phone and held it till it connects and it does the same Samsung logo, goes black, Samsung animated logo, then turns off BUT no vibrating anymore. If I press ANY button though as long as it's being held it vibrates every couple of seconds and if I hold volume down while I connect the battery it goes to Download mode but can't do anything and it turns off after about five seconds same as before, still no recovery access either. Heard that there is a power button issue with this phone and for the heck of it I've wiggled and pressed the power button with no charger or battery connected for around half an hour just to see if I can make it better, but no luck.
Hope to hear a solution to this. I would take the back cover off and clean the power button but I'm not sure if that would void the AT&T insurance, not going to try till I know I can get away with it without them knowing because if I can't fix it it's getting sent off for repairs.
EDIT: And sort of following captemo's suggestion I took a metal box, laid a hoodie over it for a bit of padding, then moderately bounced the phone on its power button side (without letting the power button be pressed/pushed, by letting it hang over the edge of the box) for a minute or so as if thinking the power button was stuck pushed in and I was trying to knock it back out, then put its battery back in and what do you know it turns on fine now. Weirdest way I've ever had to fix a phone, but hey it works now so the girlfriend will be happy.
herqulees said:
Am having this same issue with my girlfriends phone just as of a couple hours ago. It's completely stock and just recently received an OTA update a few days ago, she showed me bragging how she can watch videos and do other things at the same time now knowing how much I want a Note lol, she's had zero issues with it other than the battery getting very hot while charging a week or so ago and seems to be very slightly bulging now that I've looked at it. Out of nowhere today as we're walking through a parking lot and she's carrying it in her hand, not even using it, she says something is wrong with her phone and hands it to me with it vibrating every couple of seconds and not reacting to any buttons. I take the battery out and when we get inside put it back in and without even pressing anything it goes to the Samsung logo, black, animated Samsung logo, then turns off and goes back to vibrating every couple seconds. I look up the button combination for recovery and download mode and all that, I try recovery and it does the same vibrate every couple of seconds but never goes to recovery, and if I take the battery out, hold down volume down, then put the battery in it comes up with the warning about installing ROMs and all that, weather I press volume down or do nothing it stays at that screen for maybe five seconds then turns off and the only way I can get to the download mode is to take the battery out then press volume down. I have the Sprint Samsung Epic 4G and the batteries aren't the same but are very similar, mine is just shorter and 1500mAh, hers is taller and 2500mAh. So for the heck of it I put hers in my phone and hold it enough to where it connects and turn on my phone without issue, it boots up and shows 70% on the battery, I now have it plugged in and charging the battery at the moment with no issues. I put my battery in her phone and held it till it connects and it does the same Samsung logo, goes black, Samsung animated logo, then turns off BUT no vibrating anymore. If I press ANY button though as long as it's being held it vibrates every couple of seconds and if I hold volume down while I connect the battery it goes to Download mode but can't do anything and it turns off after about five seconds same as before, still no recovery access either. Heard that there is a power button issue with this phone and for the heck of it I've wiggled and pressed the power button with no charger or battery connected for around half an hour just to see if I can make it better, but no luck.
Hope to hear a solution to this. I would take the back cover off and clean the power button but I'm not sure if that would void the AT&T insurance, not going to try till I know I can get away with it without them knowing because if I can't fix it it's getting sent off for repairs.
EDIT: And sort of following captemo's suggestion I took a metal box, laid a hoodie over it for a bit of padding, then moderately bounced the phone on its power button side (without letting the power button be pressed/pushed, by letting it hang over the edge of the box) for a minute or so as if thinking the power button was stuck pushed in and I was trying to knock it back out, then put its battery back in and what do you know it turns on fine now. Weirdest way I've ever had to fix a phone, but hey it works now so the girlfriend will be happy.
Click to expand...
Click to collapse
Sort of is about right, glad you got it going. Many will complain about the button still clicking even though button is actually stuck. Many have cited some very simple sounding instructions for cleaning power button contacts with minimal deconstruction of phone. Using swab and alcohol. Run a search in q&a, sure you will get something.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
I tried the button with no resolution. I just went ahead and jumped ship and bought Note 3. Thanks to everyone who tried to help out

LGL38C

I don't think this is the right forum, but I couldn't find one specifically for this device.
I'll start with a brief explanation...
I work in a motel where things are constantly being left behind by guests. Policy requires that we hold lost items for 30 days. At which time employees can take said items. I always get the phones/gadgets.
So, I just got one of these LG Optimus Dynamic devices. However, it won't turn on (probably the reason they left it behind). When I press the power button, I just get a solid white screen... Is there any way to fix this device, or is it just a paperweight at this point?
Can0dope said:
I don't think this is the right forum, but I couldn't find one specifically for this device.
I'll start with a brief explanation...
I work in a motel where things are constantly being left behind by guests. Policy requires that we hold lost items for 30 days. At which time employees can take said items. I always get the phones/gadgets.
So, I just got one of these LG Optimus Dynamic devices. However, it won't turn on (probably the reason they left it behind). When I press the power button, I just get a solid white screen... Is there any way to fix this device, or is it just a paperweight at this point?
Click to expand...
Click to collapse
@Can0dope
Remove battery. Wait 10 seconds. Put battery back in. Hold Volume Down and plug an Usb cable in it (USB must be in PC with an os running also). Tell me what happens.
@christi9503 I followed your instructions. It booted up to the white screen again, the screen flashed, it made a boot sound, and vibrated. A crack has recently appeared under the screen. Touch is still responsive.
Can0dope said:
@christi9503 I followed your instructions. It booted up to the white screen again, the screen flashed, it made a boot sound, and vibrated. A crack has recently appeared under the screen. Touch is still responsive.
Click to expand...
Click to collapse
That is strange that should get you in the emergency mode. Try again holding button up. If this does not work power it off hold Volume down+Home button+Power. wait 8 seconds release power. tell me what happens.

Defective Power Button

I took apart my GS4 today and discovered that the problem causing my phone to turn off on the boot screen is the power button. This was a complete random and freak occurrence. I have had a case on my phone since the day I bought it and I can't see why the button would be damaged. I removed the physical button (the one you depress with your thumb / finger) and still the phone would turn off incorrectly. The issue has to be with the power button, but it's soldered on and I have no idea what to do or how to go about repairing it.

Power button not working

Brand new s3.
power button doesn't seem to work. Anyone else?
not a known issue, take it back.
You realise you need to hold the POWER button down for a length of time?
Same problem. I haven't installed any apps or anything not either previously installed on another phone or tablet. Button isn't stuck, just totally unresponsive. Guess a trip to best buy is in my future
Add me to the list. My power button stopped working a few days ago.
I thought mine had died until I realised the batter had gone flat but I'm quite sure that's not the issue here.
Yea happened to me too. Maybe some water spilled. If not you have been abusing the power button. Better get a sleep wake cover like a finite and don't let the battery die. Power button issues went away after a few hours. Trick is to keep insisting the tab that power button still works don't give up.
Also press it in centre don't go wayward while pressing.
If you got issue with power button and got warranty get it changed for a replacement device... DO NOT GO FOR REPAIR SAME DEVICE.
Also if you connect charger and remove and connect trick is to learn how it works tab s3 should turn on without power button required. Just make sure you got that fingerprint unlock also keep screen timeout less if u don't have auto sleepwake cover

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