Sansui au-777d or au-777a need schematics

[alanku]

I am glad that help you. If red/green winding are higher than 53V, the power transistor will heat to much !! That's happen to me when I have used a 230Vac to 110Vac transformer to power the unit.

Yes you aware me to check.the output voltage again ,i.found my new.winding transformer is 58V,I NOT.sure IS BECAUSE of this my 4000 uf capacitor.spoil,i am.waiting to.replace a 10000uf 80v capaciotor,yet stock to arrive.thing to start doing restoration.have seen leestereo post about the.modification,i am.not sure is the.sound will improve a lot or not.thanks for alert!ii

 

[AnalogueBen]

Just thought I'd upload these... a little easier to read than the free download in the service manual.

 

[AnalogueBen]

Sorry! You won't be able see the resolution as in the pics I uploaded

 

[RobinTW]

There is a print poster function in Acrobat reader and I found it very useful to get large schematics printed out.

https://helpx.adobe.com/acrobat/kb/print-posters-banners-acrobat-reader.html

 

[alanku]

thanks