Evolution x repair log...not yet completed

[makedome]

Hello,

I'm trying to repair this revolution x board. At the beginning it was booting with check errors on u49 and u67 and u77. I successed to fix those errors replacing all the smd capacitors, u57 and u58, repairing a corroded trace under u17 from u28 pin 7 to u17 pin9.
The board booted fine and everything looked to be working but...

after a while the screen gets garbed so there must be something that fails after a while, Tried both with fresh and hot air on every component but didn't find the culprit.
Any idea?

first start video: everything works fine

https://youtu.be/6kH95_wpIXk

​after a while screen corrupts

https://youtu.be/2hOhrjS0np4

https://youtu.be/pvYUDUHzHI4

[channelmaniac]

Showing the DMA Controller as bad in the last video makes it look like you have an open trace somewhere. Try running your Well Calibrated Finger over the board and see if you can touch a specific spot to make it go crazy or clear up on the screen. Also, tap on the DMA Controller to see if possibly you're dealing with a bad solder joint on it.