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Sony TA-V715T amplifier sound is low

I accidentally plugged my Sony TA-V715T to 220V power wall outlet while it was 110v and the speaker sound is low.
 

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TonyStark
TonyStark picture
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Hello!

The following components may have been damaged:
-Mains transformer
-power amplifier transistors, semiconductors
-power supply capacitors, semiconductors
The wiring diagram can be found on the Internet, the error can be limited based on the drawing.
With the right tools and equipment, repairs can be performed.

 Best regards: Tony

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