Pioneer SX-780

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Very close

Thanks for the tip, it help me to probably pinpoint the problem

It was very close, actually one of the power regulator transistors failed, the DT12 type. I have to get a replacement and then will see. Anyway a schematics would help.

many thanks, Aaron
 
Thanks to all for the help, I am making progress.

I do have fixed the 13 v regulator and then the SX-780 started working.

There are additional 2 regulators giving +/- 50 volt, I guess this is wrong and they are failing.

Does any of you know what should be their voltage?

Still looking for schematics/manual. That would help. I could not find them in the sites offered.

Thanks a lot anyway.

Aaron
 
Aaron,

Hello! I can't remeber the voltages there.
Its really been a while since the last time I work on that
model. I am still looking for the service manual of that
model. I know I have that but I can't remember where did
I put it. 🙁
I will ask my technicians maybe its on my old filing cabinet.

Danny
 
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