Glass replacement - Touch working but blank screen
I had a galaxy S4 with a broken glass (but everything else ok) that I don't use anymore but I thought I would repair it so that kids could use it for games.
I followed directions here Samsung Galaxy S4 Cracked Front Glass Replacement
I removed the broken glass without too much difficulty with time using a kind of heat gun that I had at work.
I tried to clean the digitized with a humid cloth because I didn't have alcohol but as expected it didn't clean anything.
After 30 min I thought I would try to turn the phone on, so I put the battery and used the power button, unfortunately I got a flash of a hozirontal green lines on the right 1/8th of the screen, and then the lcd stayed black. Otherwise the phone works well, touch still works, I was able to check that using 'adb screenrecord ...'
Here's a video of what happens https://www.youtube.com/watch?v=-BacbRvT...
Weirdly the video caught only the top part of the green lines but they show up from the top to the bottom
I checked the LCD flex which seems well connected. I wouldn't get touch if it wasn't?
I can reproduce the green lines on poweron if I have not powered on the phone for a while (15 minutes). Otherwise no flash.
What do you think? Did I damage the LCD+Digitizer?
Is it not unusual to damage the LCD without damaging the touch?
Could this be due to overheating?
Thanks in advance
Is this a good question?