$75 bought me....

[jco1385 5,000+ posts]

denon avr ftw //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[bball09124 10+ year member]

Stereo or multichannel receiver? What model is it? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Hitachi SR-903

Is it junk or would it be worth the cash to fix it up?

 

[JimJ 5,000+ posts]

I don't see too much on it out there. If it was a Kenwood, Sansui, Pioneer or Marantz, I'd say go for it.

I'm willing to bet that what you're hearing are bad electrolytic caps, they tend to go after 30 years.

 

[bball09124 10+ year member]

I don't see too much on it out there. If it was a Kenwood, Sansui, Pioneer or Marantz, I'd say go for it.
I'm willing to bet that what you're hearing are bad electrolytic caps, they tend to go after 30 years.

It was a quality receiver back in the day. How much would those caps be and how hard would they be to replace?

All I see on ebay is a magazine from 1977 that featured it.

http://cgi.ebay.com/Stereo-Magazine-Fall-1977-Hitachi-SR-903-Onkyo-TX-8500_W0QQitemZ120434520743QQcmdZViewItemQQptZVintage_Electronics_R2?hash=item1c0a74f2a7&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1205%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50

 

[JimJ 5,000+ posts]

Cost would depend on their sizes...but PE would stock them, or Mouser/Digi-Key.

They're pretty easy to replace. All you need is a soldering iron and desoldering bulb and wick.

 

[bball09124 10+ year member]

Well, is it safe to say that the EC's are definitely the problem? I took the case apart, they are Nippon Chemi-con 80V 6800 uF. I can solder well enough, but if there's a chance that the EC's are not the problem then I'd rather not buy new ones. Any way to test em?

 

[JimJ 5,000+ posts]

They may not be the only problem, but I can almost guarantee the dieletric is toast after that length of time.

Guess you could test them with an LCR and ESR meter, but without them on hand, not really.

 

[moo_awn 10+ year member]

Great find, I thought I found a good deal the other week when I bought a pair of Infinity Primus 250 towers, a pair of Primus 150 bookshelves, and a Primus 25 center channel, all in like new condition for $220. I think you have me beat.