I have a strange behaviour with the sound and display. Sometimes everything boots without problem, the display is as normal it plays properly.
At some time, I get problems with the display (horizontal lines, or dots, or even dark)
The display is new and works fine if I put it on another machine .
I replaced the ribbon cable from the A/S board, same problem
Then resoldered the J603 male connector and fuses support, same problem remains.
By looking at the audio board, I noticed that it sometimes boots properly Wwith the led 503 flickering. After a while, either the led becomes steadily lit, or dark (in which case the display becomes dark as well).
Can anyone bring some help ?
Thanks in advance