Sony TA-F55

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Hi everyone, I have a problem with switching power supply of a Sony TA-F55.

I have changed the electrolytic capacitors, but I don't have output voltage.

300 volt input is ok.

I also try without load, but I don't have output voltage again.

Transistors are ok, and also diodes.

I searched for the service manual or electric diagram and also in the forum without success.

Anyone can help me, please?

Thanks in advance.

Bye
Massi
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.