Try to boot without the 2 ribboncables on top of the cpu board and do connect J606 and see what happens.
The led on the av-board is not a power LED
(Topic ID: 255307)
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Quoted from ElectricLou:Nothing different
If the cpu still doesn't boot without J201/J102, it seems that the av-board is pulling the 5 volt down.
Inspect the av-board closely, especially soundROM S2, difficult to see on my little screen but it looks wrong orientared. If so, it is likely blown now.
About the Vac measurments, you don't measure Vac from GND to live. And be careful there, this is high voltage
Quoted from ElectricLou:What do you think zaza ?
I should buy a new soundROM and we’ll see?
Don't know. You already tried to boot without S2-ROM and still had no cpu-boot so I think someting is very wrong with av-board.
Final test would be to to pull all eproms fron av-board and see if it will at least boot with display.
Quoted from ElectricLou:Last question: does it matter which way you solder pop bumper flasher under PF?
If the sockets are wedge it doesn't matter. Some LED flashers are polarity sensitive but that would only be problem for bajonet socket.
Quoted from ElectricLou:electronic is not my strong suit so I only cleaned boards
This board is very electrostatic sensitive.
Not working esd-safe can result in a not working board.
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