P814 pin stby5V pin with 5v but oscillating. the miniature led on the main board flashes and sometimes turns red and then flashes again. I checked and tested all of the electrolytic capacitors on the source power board, but all are normal.
I put a video in mp4 of the meter measuring the voltage of 5v of the standby, sorry for the bad image

I was able to locate the faulty component that caused the 5v voltage on the stby5V pin of the P814 connector to oscillate, it was the PC201 (photo aclopator 817) component. Now the voltage is right.

When I turned on the TV I noticed that the high voltages that feed the YSUS card are missing.

I re-examined the source plate for the in the that provides voltages to the Ysus board. When replacing the PC802 photoaclobler the TV has returned to normal operation.

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Posted after 7 minutes 8 seconds:
When I turned on the TV, I noticed that a pixel line is erased at the top of the image. I found two trails from the flat cable that goes to the P6 connector on the YSUS card, how can I recover these trails?
according to the attached image, with a red circle