LG OLED65CXPUA no video, no sound, just flash on side of screen

[sut_boxer]

Video linked below of screen issue.

TV worked fine for 18 months, suddenly did not have video anymore.
Cleaned all ribbons and connections with canned air, no change.
Cleaned all ribbons and connections with rubbing alcohol, no change.
Replaced T-Con board, no change.
Inspected all the caps on the power board, none are bulging or out of place or broken.

Wife is about to kill me for thinking I need to spend $200 on a new mainboard. Any ideas?

https://youtube.com/shorts/UaCupH8yiUQ?feature=share

[Diah]

Re: LG OLED65CXPUA no video, no sound, just flash on side of screen

Wife is about to kill me for thinking I need to spend $200 on a new mainboard. Any ideas?

well i hope you still alive...
from yours video not easy to do judgment.. need more info / test.. for example this screen blinking did it reboot.. or remain so... if remain so did you noticed the Audio Optic Outport lit Red?

you have on the Main boards 2 Micro switch, you can try one by one by press and keep press for 10 second while you plug the tv in wall..