Re: STR-DE845/945 - Standby CKT help


"427Cobraman" <quartermiler1320@xxxxxxxxx> wrote in message
news:1141780241.243805.29580@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
OK. Here's an update. I tried the front panel board from the 945 in
the 845 and it worked great. I checked continuity on all of the
switches on the bad board and none are shorted. I'm guessing a new
board is in order. What is a good source for sony parts? I've used
mostly pac parts but they don't seem to show this part, let alone many
sony replacement parts.

Alex

If you've got the skill to have undertaken the repair in the first place,
and have managed to successfuly transplant the board from the '9 to the '8,
then I wouldn't give up quite yet. You say that it initially worked, so
there's a good chance that there's not a lot wrong. As the other poster
said, now you know for sure that the problem is in the system control, check
the clock generator crystal for activity with a 'scope, check that the 5v
actually reaching the Vcc pin on the micro is accurate and clean, and check
that there is activity on the switch matrix lines, just to make sure that
there is no leakage across any of them, even though no switches appear to be
actually closed. Have you checked this one with the remote control ? You
might need to use the remote which matches the board ie from the '9, unless
you know for sure that both remotes work both units correctly.

Arfa


.

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