Database Users

is there any solution to "screen can't switch on"?

at the begining , my HD is fine.
But , after 2month , the phone has some rotation problem( it doesn;t matter, as you can solve it by pressing the on/off buttom )
But now, the phone's screen can't switch on, when i touch the four buttom on the surface of phone, it still vibrate..just i can't switch on the screen"
i have already tried all the things like take out the battery, press the reset buttom... the problem still occur,
Screen can sometime turn on luckily~
but, if the phone's screen is switched off for a while, the problem still occur..
can any professional heal my phone?

likashing said:
at the begining , my HD is fine.
But , after 2month , the phone has some rotation problem( it doesn;t matter, as you can solve it by pressing the on/off buttom )
But now, the phone's screen can't switch on, when i touch the four buttom on the surface of phone, it still vibrate..just i can't switch on the screen"
i have already tried all the things like take out the battery, press the reset buttom... the problem still occur,
Screen can sometime turn on luckily~
but, if the phone's screen is switched off for a while, the problem still occur..
can any professional heal my phone?
Click to expand...
Click to collapse
Obvious questions: Have you tried a hard reset?, Diff rom? Have you loaded up anything weird that mighta casued issues? If it will do a hard reset then do it. Start from scratch. If it works then be mindful of what you reload it with. If that doesn't get it, try a diff rom. At this point you got nothing to lose. Will it go into bootloader mode?
Battery comes to mind also. Have you run it down to nothing? Sometimes that will affect the charging capabilities. When the screen is dark can you still hear sound? Def do the HR.

My suggestion would be, to give the HD to your reseller and get it fixed.
I have had the same problem, and as my HD also didn't connect to my PC anymore, I send it in, and got a brand new one, because they couldn't fix it. Make a backup while you can, because the problem will get worse over time.

Likashing, the same exact thing started to happen to me a couple days ago. I've hard reset and flashed a new ROM. It seems that the problem is intermittent. After I just let the phone sit for a few minutes, the screen will come back on. It makes me wonder if this is heat-related issue. Anyway, I'm screwed, because I have no warranty since I bought it from a guy in Australia (I'm in US and needed the T8285).
I'll definitely be keeping an eye here to see if there's any resolution other than repair.

while the screen does not turn on, have you maybe tried to use another phone to call your HD and check if the screen turns on when the call arrives?
maybe if the screen turns on it's more a software related issue (so hardreset et cetera might be worth a try), if not, i fear it's hardware

crashDebug said:
while the screen does not turn on, have you maybe tried to use another phone to call your HD and check if the screen turns on when the call arrives?
maybe if the screen turns on it's more a software related issue (so hardreset et cetera might be worth a try), if not, i fear it's hardware
Click to expand...
Click to collapse
Good point crashDebug... I will definitely try that the next time the behavior is exhibited (right now is one of those times where I can't intentionally duplicate the issue... of course!)

stpete111 said:
Likashing, the same exact thing started to happen to me a couple days ago. I've hard reset and flashed a new ROM. It seems that the problem is intermittent. After I just let the phone sit for a few minutes, the screen will come back on. It makes me wonder if this is heat-related issue. Anyway, I'm screwed, because I have no warranty since I bought it from a guy in Australia (I'm in US and needed the T8285).
I'll definitely be keeping an eye here to see if there's any resolution other than repair.
Click to expand...
Click to collapse
...i have no warranty too....
in Taiwan , there are couple of people have these situation, the maintenance staff working Htc, said that it is a motherboard problem or the screen problem...but i wonder that why only few people have this problem. My phone is completely fine before i flash the HSPl1.56OLINEX.but when i try to flash back to Hspl 1.4 , the problem still happen.....

cbreze said:
Obvious questions: Have you tried a hard reset?, Diff rom? Have you loaded up anything weird that mighta casued issues? If it will do a hard reset then do it. Start from scratch. If it works then be mindful of what you reload it with. If that doesn't get it, try a diff rom. At this point you got nothing to lose. Will it go into bootloader mode?
Battery comes to mind also. Have you run it down to nothing? Sometimes that will affect the charging capabilities. When the screen is dark can you still hear sound? Def do the HR.
Click to expand...
Click to collapse
i have tried diff rom and diff HSPL....
sometimes, the phone's screen still can turn on luckily, then i can go to bootloader mode, but if the phone sit for a while, the phone's screen can't turn on...then i can't get into bootloader. ..
i can hear sound when someone phone me...but the screen still keep dark!

Exactly same problem here
HTC purchased in Sweden.
Cant switch screen on, when incoming calls come it rings but no screen alive. Vibration when pressing the buttons at bottom. And the low battery sound i can here when low on battery.
When connecting it to charger the orange light at power button will not light up (orange) as usually.
My problems started when i had the HTC in my jacket pocket, a VERY rainy day, so the phone was moist OBS not wet. Thats what i beleive ghappened to my phone.
And now i can not find the purchase receipt to the phone

It might be entirely unrelated, but the screen on my THD also had the same problems immediately after a few flights from coast to upcountry 1800m elevation during summer. The system powered up but the display remained off, and no amount of fiddling would switch it on.
The first time it took a few hours and then spontaneously corrected itself. The second time I had to remove the battery for two days, and then all was fine again. Only happened after flights from coast in summer. It hasn't happened again, but then it's winter here in the southern hemisphere.
I suspect condensation, but that's only a guess...

I have the same problem too here in Australia. It started with the screen not turning on but the buttons still work. Then you'll sometimes notice the screen is inverted and upside-down.
I've sent mine in for service. Haven't got it back yet but I understand the motherboard needs to be replaced.
In short, this is definitely a hardware problem and if you look around the discussions on the net, this is slowly becoming quite a common problem with HD.

forumx said:
I have the same problem too here in Australia. It started with the screen not turning on but the buttons still work. Then you'll sometimes notice the screen is inverted and upside-down.
I've sent mine in for service. Haven't got it back yet but I understand the motherboard needs to be replaced.
In short, this is definitely a hardware problem and if you look around the discussions on the net, this is slowly becoming quite a common problem with HD.
Click to expand...
Click to collapse
Yes exactly, I have had the upside down screen too! Well at the very least it is good to know that people are experiencing this problem other than me. I love this phone so I will have to pay to for the repair. If anyone here has any idea or estimate of what this will cost, please share this here.

The problem for me was the moist, after three days it started to react again... And now it seems to be working...
I guess the air up in the mountains are moist... maybe...

AddeBC said:
The problem for me was the moist, after three days it started to react again... And now it seems to be working...
I guess the air up in the mountains are moist... maybe...
Click to expand...
Click to collapse
So then that's two people so far (including AFW from the first page) who have said that after some situations involving moisture have passed, things are back in working order. I hope for the same to happen soon.

so it is due mainly to wateR?

leobox1 said:
so it is due mainly to wateR?
Click to expand...
Click to collapse
I doubt it is related to water. My device never gets near water or moisture and still experience this problem. I do wonder if it is heat related as the device can get quite hot during charging and perhaps cause the motherboard to play up after a while.
btw, does any of you use some sort of plastic/silicone cover. I wonder whether this type of cover blocks the heat from dispersing.

As i understand it, so far only people who have flashed a different ROM (and with it maybe radios) to their device. If it's a heat issue it could be something to do with the radio version. I have tried different radios and there was one in particular that heated my phone up like crazy while i was listening to music without the screen on (but i don't recall which one it was).

I only used stock rom and never flash my device and still have problem...

forumx said:
I doubt it is related to water. My device never gets near water or moisture and still experience this problem. I do wonder if it is heat related as the device can get quite hot during charging and perhaps cause the motherboard to play up after a while.
btw, does any of you use some sort of plastic/silicone cover. I wonder whether this type of cover blocks the heat from dispersing.
Click to expand...
Click to collapse
I do not have any type of cover on mine.
I agree with the possibility of it being a heat issue though.

Very perplexing. This past weekend I again travelled from Joburg to the coast (from 1800m elevation to sea level), and again the THD screen stopped responding to input whilst at the coast. I desperately fiddled, reflashed, hard reset at least 10 times to see if I could get the screen to work, but it always booted up locked, and no amount of fiddling would do anything. I even put the thing on an oil heater for a few hours, hoping that if condensation was the culprit (my current theory) then a goodly dose of heat would at least evaporate any moisture, and once, for about a minute the screen responded, and then again went dead to touch. I had to use another phone all weekend. This evening, on returning to Joburg, I resolved to get another device, maybe the Diamond 2. After a few hours back home I retrieved the THD, put in the SIM and, lo and behold, it worked fine. This is most vexing, but I fear the THD will have to go -- I just can't live with this unreliability. Sad, really, because I love the big display, I love the fact that guys like Throy are cooking good ROMs. In many ways the THD is about the best out there, at least for my needs. But that &@&* thing has to be reliable.

Touchscreen Unresponsive After Sleep

Anyone else have this problem? Sometimes, if the screen goes to sleep, when I wake it back up, the touchscreen is unresponsive. I have to soft reset to get it to start up again. Any ideas on how to fix it?

I had the same problem, and flashed another rom, and problem gone.

Hello guys,
I was just searching through the forum with this exact problem and found this thread.
If the phone wakes up from sleep the touchscreen is unresponsive for a few seconds. If I insist to press it it only takes longer for it to respond. This is a very big problem because I sometimes miss calls because I can't answer them. Not even the for hard buttons don't work (maybe because they are also touchscreen).
I've tried flashing different ROM's (Miri, Dutty, NRG) even flashed back to the standard one and again back to a 6.5 one (as I saw this step fixes a lot of problems for some people) but the result is the same. I'm running out of ideas.
I don't think it's a hardware issue because if i leave the phone until the backlight dims and touch it, it goes back on, so it registers the press but doesn't act on it.
It's a very serious and I'm hoping someone here has a solution.

Nobody else is having this issue? Is there no hint on what is going wrong with our phones?
It appears it's happening more and more often and the screen is dead for more and more time.

Hi
I have had the same problem but solved tonight
There are many threads about this but no real solution I tried them all.
My first HD lasted till last week when I had to replace it because of a "Newton Ring" problem. In 10 months of ownership I got a screen freeze maybe 5 times.
My new replacement arrived last Saturday - same original Orange Rom and radio.
I have loaded exactly the same programs from the old phone and have found that when I put it in sleep mode via the power button its a 50/50 chance of it waking up. Receiving a text message does not wake it up either.
I can hear the volume control working and the haptic buttons provide feedback - but black screen. If I hold the power button down I get the bleep to ask if I want to power the device off - then all goes dead. If I wait 5 minutes the haptic buttons/volume buttons work again and the screen comes alive revealing the yes/no option to power off.
Also strange whilst in this locked state the orange charging light comes on - when it goes off I know i can wake the screen up !
I tried :
Enabling and disabling the Today Screen timeout
Auto adjust backlight off and on
Different screen brightness
Manual/default operator selection
Checked HD Tweaks settings were correct in registry and things I can't remember.
What has worked :
Start - Settings - System - Power - Advanced and unchecked the box "turn off device if not used for 5 minutes"
The daft thing is this was enabled on my old phone and would always wake up with a text/call or power button push !
What has changed ?
r
Andrew

Update - Found the problem
Whilst the above fixed my freeze problem it has been bugging me why - as the advanced power features are useful and I don't always remember to hit the power button to sleep the device.
I have now realized what was not set up the same as my old phone.
No start up password !
To enable this I found this thread http://forum.xda-developers.com/showthread.php?p=5004821 and changed my registry setting to 0.
This immediately takes you to the lock screen where you can now enter your password details and make them stick.
I now have a start up password and can set the timeout to 24hrs.
All the power settings now work correctly - and no screen freeze
r
Andrew

Spoke too soon
3 hours ago went to use my phone - black screen
Connected via activesync and MyMobileR.
Rebooted and got the "Microp Version Mismatch 0" message.
Checked out threads about this error on the mainly Diamond forum and can confirm my screen is well and truly dead.
Contacted Orange and they are sending another replacement tomorrow.
What p*sses me off is the number of hours I have spent to get one normal days use.
r
Andrew

Sorry to keep posting to this thread - but I am hoping that my experiences may help somebody
As said I am getting a replacement tomorrow and in one of the threads a guy said put it in the fridge for 20 minutes !
Well I thought what the h*ll and did.
Wrapped it in some tissues to absorb the condensation when I took it out - replaced the battery and it works - no Microp message and has behaved ok for 6 hours.
Got to be a hardware issue ?
Your thoughts.............
r
Andrew

Hi Bigfish,
please let me know the phone is still ok after more hours out of the fridge. i have similar problem on my HTC touch- ELF and i have been searching for solution, and i found this
http://www.fixya.com/support/t982721...not_responding .
i do not have tools to open it myself and would like to try it.
if you r familiar with it please let me know.
cheers
M.

Hi
Sorry your link is not working.
As to the phone it was still ok 26 hours later when I had to exchange it for my replacement.
Weird !
r
Andrew

Hi Andrew,
the fridge trick did not work for me. i kept searching for solutions and i found out that the problem is the digitizer (the touch screen). it might have received a shock (dropped on the ground) or other unusual pressure (in the pocket), and the digitizer gets out of initial position. the digitizer takes that contact as a tap -a continious tap- and does not respond to other taps. you might have to open the device and reposition the digitizer or replace it is there is some damage.
cheers
mumur

Sorry to hear that.
My replacement phone - so far has behaved perfectly.
r
Andrew

it strikes me that if I shake the phone that the phone jamming. I get no response. Even when I tap my finger hard against the rear top I get a crash. The only solution is to take out the battery and reboot. I think it has to do with a hardware problem.
there are others who also suffer from it?

screen/backlight issue, tripped knox phone, what to do?

I'll preface by saying I am an IT professional for work so this is no noob request.
So, this all started with my capacitive buttons acting up. I have CWM (tripped knox), SlimROM. What was happening was when my capactive buttons were lit and then would dim... whenever I'd press ANYWHERE on the screen (with the capactive buttons dimmed), it would press the back button for me. Made no sense to me, sounds weird I know. Never got around to trying to flash a new rom or anything, just ended up permanently having the buttons dimmed.
Fast forward a few days... in my car in the cupholder, spilled energy drink where my phone was sitting in cup holding. Probably only an inch high or so with my phone upside down (home button to the sky), so the charging port side was safe. That day is when it went south. I'd hit the power button on, screen would come on. Power button off and on again, screen would not go on (but capactive buttons WILL light up, and digitizer works and you can hear the audio). Off and on again, maybe came on. Intermittent. Put in rice for 36 hours. Same thing. Note that when the screen IS on it is perfectly fine and usable (the capacitive button problem is gone now too....). I set the display to turn off after 30 minutes of inactivity. It's been on for like 10 right now and hasn't flickered or nothing. It's just if I turn the phone off, and back on, chances are it will not come back on (but capacitive buttons always light and touch screen and audio still works). It seems to only come on when it's been left for a while. Like if I turned it off now, and went off/on/off/on/off/on it would probably stay black until i left for 10 minutes and then might fire on.
My Note 3 model is SM-N900W8 (Canadian TELUS). Behind the battery there is a speck of a circle that is pink looking. Unsure if this is a Liquid Damage Indicator. Another CLEAR liquid indicator on the top left when case is off is clearly white, the LDI on the battery is white. Had a hard time finding image that shows the LDI's. Anyway, KNOX is tripped. As far as I've researched I cannot change this. I do have a CWM image of the stock Samsung firmware. But, there is no point in going through warranty at this point (phone IS under warranty though) unless I can revert KNOX, and confirm the LDI's are all white......
I am thinking this would be a relatively easy hardware fix though. Everything seems to work perfectly fine if the screen IS on. It's just the screen getting on being finicky.....
Any suggestions?
Currently getting all data off, and then will try flashing another firmware etc. but this really seems like a hardware issue.....
Thanks for any advice!

brockmo said:
I'll preface by saying I am an IT professional for work so this is no noob request.
So, this all started with my capacitive buttons acting up. I have CWM (tripped knox), SlimROM. What was happening was when my capactive buttons were lit and then would dim... whenever I'd press ANYWHERE on the screen (with the capactive buttons dimmed), it would press the back button for me. Made no sense to me, sounds weird I know. Never got around to trying to flash a new rom or anything, just ended up permanently having the buttons dimmed.
Fast forward a few days... in my car in the cupholder, spilled energy drink where my phone was sitting in cup holding. Probably only an inch high or so with my phone upside down (home button to the sky), so the charging port side was safe. That day is when it went south. I'd hit the power button on, screen would come on. Power button off and on again, screen would not go on (but capactive buttons WILL light up, and digitizer works and you can hear the audio). Off and on again, maybe came on. Intermittent. Put in rice for 36 hours. Same thing. Note that when the screen IS on it is perfectly fine and usable (the capacitive button problem is gone now too....). I set the display to turn off after 30 minutes of inactivity. It's been on for like 10 right now and hasn't flickered or nothing. It's just if I turn the phone off, and back on, chances are it will not come back on (but capacitive buttons always light and touch screen and audio still works). It seems to only come on when it's been left for a while. Like if I turned it off now, and went off/on/off/on/off/on it would probably stay black until i left for 10 minutes and then might fire on.
My Note 3 model is SM-N900W8 (Canadian TELUS). Behind the battery there is a speck of a circle that is pink looking. Unsure if this is a Liquid Damage Indicator. Another CLEAR liquid indicator on the top left when case is off is clearly white, the LDI on the battery is white. Had a hard time finding image that shows the LDI's. Anyway, KNOX is tripped. As far as I've researched I cannot change this. I do have a CWM image of the stock Samsung firmware. But, there is no point in going through warranty at this point (phone IS under warranty though) unless I can revert KNOX, and confirm the LDI's are all white......
I am thinking this would be a relatively easy hardware fix though. Everything seems to work perfectly fine if the screen IS on. It's just the screen getting on being finicky.....
Any suggestions?
Currently getting all data off, and then will try flashing another firmware etc. but this really seems like a hardware issue.....
Thanks for any advice!
Click to expand...
Click to collapse
So how did it go?
I would just bring it to repair, it's better to lose a hundred canadian (send to repair or fix yourself) than to bear with a broken phone that doesn't sleep properly.

Test the proximity sensor and ambient light sensor.... If you have any "pocket mode" or active display features active in your rom try disabling those... Sounds like your warranty is definitely void but you could take it to a local independent shop if samsung wants too much to fix it.
Good luck!
Sent from my SM-T320 using Tapatalk

nicholaschum said:
So how did it go?
I would just bring it to repair, it's better to lose a hundred canadian (send to repair or fix yourself) than to bear with a broken phone that doesn't sleep properly.
Click to expand...
Click to collapse
Since I cannot stand when I research an issue, finally find someone with the same question and turns out there was never a resolution response, I am going to say that much to my shock, reflashing to my stock Samsung TouchWiz nandroid fixed the issue. I then clean flashed the latest SlimROM and all is well. I had dirty flashed to the latest (stable) SlimROM 4.4.4 and it worked fine for weeks which is why I had little to no faith a reflash would fix. Especially since the screen would be blacked out during the boot screens. That is baffling to me. A custom ROM/kernel should have no effect prior to the ROM booting should it? I guess I am wrong on that? Regardless, happy I did not have to work around the KNOX being triipped....

brockmo said:
Since I cannot stand when I research an issue, finally find someone with the same question and turns out there was never a resolution response, I am going to say that much to my shock, reflashing to my stock Samsung TouchWiz nandroid fixed the issue. I then clean flashed the latest SlimROM and all is well. I had dirty flashed to the latest (stable) SlimROM 4.4.4 and it worked fine for weeks which is why I had little to no faith a reflash would fix. Especially since the screen would be blacked out during the boot screens. That is baffling to me. A custom ROM/kernel should have no effect prior to the ROM booting should it? I guess I am wrong on that? Regardless, happy I did not have to work around the KNOX being triipped....
Click to expand...
Click to collapse
That's so strange, but congratulations on fixing it.
You should have a boot animation with any ROM you flash, just remember to check your MD5's to the developer's MD5's after you download.

Split-Screen - Squeeze/Connector Reattach - Does Not Fix

Display is only showing the left side of the screen. Right side of the display looks like static. You've all seen this before on the forum. Touch still works on the entire screen.
The squeeze fix never worked. Tapping on the device or any other physical manipulation has never fixed this issue at any time. No changes, not even a flicker.
This issue persists even during boot, during recovery and fastboot. Persists after factory resets and even bootstack changes. I have not attempted a full reset to stock as under the circumstances it seemed like it'd be ineffective.
Opened phone. Ribbon cable was secured. Popped it off, reseated it. Didn't work. Reseated it again no go. Applied a strip of electric tape to the sponge pressing on the Connector in case it wasnt applying proper pressure. No good.
Here is what did, strangely, improve the situation.
Played a video on it one day just to listen to it. While doing so, spun the phone around absent mindedly on its axis like a figet spinner. At some point the problem had gone away. Cycling rotations seemed to have fixed it. Then when the screen went off, it came back when I turned it back on.
From this point forward whenever I reboot the device the screen was fixed and remained fixed until the display is turned off. If I cycle the display the issue returns. A reboot fixes this until the display goes black even once. If I leave it on for hours it never returns.
---Wtf.
Autorotation doesn't seem to fix the issue anymore. For a short time, it seemed as if I could turn off the screen by other means and it would come back on without issue as long as I didn't touch the power button. This is no longer the case and this only lasted a day.
----
So tldr
• Screen has half screen issue (right side)
• Ribbon secured. (Phone currently open for testing)
• Rotation fixed issue. For a shirt time shutting off display by using shortcuts and coming back on with fingerprint had the phone working with no issue until I'd push the power button to turn off the display. This would have the issue return.
• After one day this no longer works and issue returns whenever the display turns off regardless of mechanism.
• Rebooting the device fixes the screen, and remains fixed until such a time when the screen turns off either manually or idle. Upon powering on the display hte issue returns and goes away on reboot.
• Soft reboots do not fix the issue for some reason.
• If I go into recovery with the screen fixed, and power off the display and power it back on the half - screen issue returns. This isn't a ROM issue.
• I am rooted. On an old 8.1.0 AEX ROM I have been using since last year. I stopped updating or messing with my phone as I found the zen in stability. No issues the entire time, until now.
•At the end of my rope.
Thank you. Hope this is clear enough. Really appreciate the help.

Krystalmyth said:
Display is only showing the left side of the screen. Right side of the display looks like static. You've all seen this before on the forum. Touch still works on the entire screen.
The squeeze fix never worked. Tapping on the device or any other physical manipulation has never fixed this issue at any time. No changes, not even a flicker.
This issue persists even during boot, during recovery and fastboot. Persists after factory resets and even bootstack changes. I have not attempted a full reset to stock as under the circumstances it seemed like it'd be ineffective.
Opened phone. Ribbon cable was secured. Popped it off, reseated it. Didn't work. Reseated it again no go. Applied a strip of electric tape to the sponge pressing on the Connector in case it wasnt applying proper pressure. No good.
Here is what did, strangely, improve the situation.
Played a video on it one day just to listen to it. While doing so, spun the phone around absent mindedly on its axis like a figet spinner. At some point the problem had gone away. Cycling rotations seemed to have fixed it. Then when the screen went off, it came back when I turned it back on.
From this point forward whenever I reboot the device the screen was fixed and remained fixed until the display is turned off. If I cycle the display the issue returns. A reboot fixes this until the display goes black even once. If I leave it on for hours it never returns.
---Wtf.
Autorotation doesn't seem to fix the issue anymore. For a short time, it seemed as if I could turn off the screen by other means and it would come back on without issue as long as I didn't touch the power button. This is no longer the case and this only lasted a day.
----
So tldr
• Screen has half screen issue (right side)
• Ribbon secured. (Phone currently open for testing)
• Rotation fixed issue. For a shirt time shutting off display by using shortcuts and coming back on with fingerprint had the phone working with no issue until I'd push the power button to turn off the display. This would have the issue return.
• After one day this no longer works and issue returns whenever the display turns off regardless of mechanism.
• Rebooting the device fixes the screen, and remains fixed until such a time when the screen turns off either manually or idle. Upon powering on the display hte issue returns and goes away on reboot.
• Soft reboots do not fix the issue for some reason.
• If I go into recovery with the screen fixed, and power off the display and power it back on the half - screen issue returns. This isn't a ROM issue.
• I am rooted. On an old 8.1.0 AEX ROM I have been using since last year. I stopped updating or messing with my phone as I found the zen in stability. No issues the entire time, until now.
•At the end of my rope.
Thank you. Hope this is clear enough. Really appreciate the help.
Click to expand...
Click to collapse
did you do anything to the phone before? Battery change for example?
I suspect your screen flex cable is bad, but since you could recover from it by turning it off and doing some voodoo magic, it kind of sounds like software... maybe just try one of the new device-specific Pie ROMs
But yeah, wtf
Actually thinking about it, it's probably the screne controller. It should have an off state and maybe a low power mode (for always on display). Of course a screen swap on the Axon makes little sense at this point.

TMobile S8 works fine, except the screen won't turn on

My brothers TMobile S8 screen randomly stopped working. It has no signs of damage anywhere as well. Weirdly, I managed to get the screen to go on one time by pressing some button combos to try to follow a guide to get it into recovery to factory reset it. Upon the phone booting, the battery had 3% and when I went to show him, it was dead. Now after letting it charge, the screen does not work once again and I can't seem to get it to come on in the same way it did before, the bright blue recovery screen.
Is there any software I can use to just attach the phone to it and factory reset it? I mean, I've seen bad phone screens before that have still had images show up on them, even if heavily damaged physically or it no longer responding to touch and showing dim lights. But this one simply doesn't turn on, except the one random time it did, and it was perfectly fine, showed no sign of damage. Any thoughts would be greatly helpful

Is the battery known to be good?
If not replace it. The system will not boot if there's not enough current. It takes a fair amount of power to boot up. A charger can't provide enough to do so...

It boots up fine, I can hear the initial TMobile boot audio as well as the notification sound the phone makes when it gets to the lock screen. I also had it stop charging @80% not too long after buying the phone on release, with some custom ROM I installed. Ofc its a possibility its battery related, since I can't see anything on it, but it was taken care than the average person I am sure

With a custom rom all bets are off. Makes troubleshooting much harder. Possible rootkit.
Firmware and malware aside if it's booting but no display, possible loose ribbon connector, failed display or mobo. That's assuming the battery is good...

Well I did disable/uninstall Superuser from the phone, and I used it for a couple years before giving it to my brother to use. That is a good point about the cable, I will search for images, maybe I can squeeze a few spots to just see what happens

moccor said:
Well I did disable/uninstall Superuser from the phone, and I used it for a couple years before giving it to my brother to use. That is a good point about the cable, I will search for images, maybe I can squeeze a few spots to just see what happens
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Sometimes just reseting a connector is all it takes. Those are low voltage lines and a perfect contact is needed.
If the battery is more then 2-3 yo it's probably at the end of its usable service life.

Thanks for the input, I will open it up if nothing else works and I will report back if it helps