Sansui AU-717


Bought my AU-717 integrated amp new in 1977. Have used it intermittently over the years and it works and sounds great, 45 years later.  The cover has never been off and I still have the owners manual.  Any reason to have it serviced?  Caps, etc?  If so, why?  And can you recommend a knowledgeable service resource in the Atlanta area?  
 

I generally live by the “if it ain’t broke, don’t fix it” philosophy but suspect that may not apply here. 
 

 

chocaholic

@atmasphere 

 

Hi Ralph.
 

I fear you have given me credit/quoted me with something I didn’t say :)

 

I was arguing for the recap of the unit. Firm believer in the benefits of both replacing old/tired caps with fresh ones, but also taking advantage of the opportunity to put higher quality parts in the piece.

 

 

I’m convinced. The challenge now is finding the “right” guy to do the work. I called Audiolab in Atlanta and was told “a few months” before he could look at it. This after several reviews referencing exceedingly long lead times (up to a year in some cases). I prefer to not ship it and am willing to drive a few hours if needed.

I suspect it’s not rocket science but this amp has sentimental value beyond its function so I’d like it to be optimally serviced. Any suggestions?

@chocaholic 

 

I would honestly go to DIYAudio or Audiokarma and reach out to the folks there for some thoughts on where to send it.

 

Understand the reluctance to ship, and you may get lucky and find someone near by. But, better to ship to someone who will do it right? Again, the person you are looking for, could live within driving distance and may be a retired tech who is working out of their basement - someone only be found through community circles.

Secret handshake is a must…

@chocaholic Any technician competent enough to service a Japanese receiver can do the work just fine. Just have him put in Nichicon or similar quality capacitors and you'll be fine. Bonus tip: ask him to use SN63 solder if he does not already.

SN63 is a 'eutectic' solder which means its almost impossible to get a bad solderjoint with it since it goes from liquid to solid so quickly.

The unit is very easy to dismantle and work on .

Discharging the Caps is where you need to be careful.

Schematics  are available on line-Tech needs an Oscilloscope -Some soldering skill and a Variac  wouldn't hurt.

cheers