AU 9900 Strange Capacitors
- Thread starter oldsysop
- Start date
Looks like someone added some extra local filtering capacitance, ugly and unnecessary, oh and they've changed the main PSU rectifiers as well - strange looking replacements too.
I assume the main filter capacitors are still there
- you don't show a topside view.
Welcome to AK! - and especially to the Exclusively Sansui forum.
Your English is fine.
I assume the main filter capacitors are still there
- you don't show a topside view.Welcome to AK! - and especially to the Exclusively Sansui forum.
Your English is fine.
Last edited:
Hipocrates
Super Member
Nice unit!! Welcome to AK
Yeah, maybe the Power filter caps where leaking so previous owner just put 4 new and smaller ones.
It looks like a muppet's work, on a pretty cool unit. I hate when hot glue is used to attach caps.
Yeah, maybe the Power filter caps where leaking so previous owner just put 4 new and smaller ones.
It looks like a muppet's work, on a pretty cool unit. I hate when hot glue is used to attach caps.
Blue Shadow
Waiting for Vintage Gear from this century
Showing the meter and the nice pics is great language bridge. We all speak pictures.
Great first couple posts.
Great first couple posts.
kevzep
Its all about the Music
Yep, some damn muppet has been in there "making things better"......get rid of all that and put it back to factory spec.
Hipocrates
Super Member
Not that hard... where are you from?I do not know how to make it original again, and I do not know what function those capacitors do there.
My knowledge only allowed me to adjust Bias and offset.
Argentina
Hipocrates
Super Member
I see, well if you have access to good quality parts, some solder skills and with some guidance you can do that job.
Someone is operating at a high capacity of crazy it seems.....
They are supposed to be what is described as 'local filtering' - that is, to smooth out the surges of current demanded the OP transistors when reproducing music. They probably aren't doing very much, 200µF is too small (even x4), and 330V is an insanely high voltage rating for such a position.
