Dynaco newbie - Stereo 400 options

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Posted by Maxmano356 on May 10, 2013 at 11:45:27

Hello all - I need a bit of advice from the experts.

I recently came into some vintage Dynaco gear. An AF-6, a PAT-5, and a Stereo 400. I don't have any background in electronics, but I bought some De-oxit, opened up the cases, cleaned everything as best I could (spent days on the outside front and backs - they look beautiful!), plugged them in and held my breath.

The tuner and the preamp work great. The 400 - not so much. All 6 fuses look good, and when I first turned the unit on I got a loud thunk like maybe a relay opening or closing? - but after that initial turn on I get no thunk now. I do get a faint distorted sound in one channel, and an even fainter noise in the other (with tuner, preamp and amp volumes at max. Blue dials work too. However, if I select NO speakers on the preamp - then the blue dials really peg, otherwise they only move faintly on the louder sounding channel and not at all on the real faint channel.

OK - sorry for the book. My question: as an electronic newbie who has only soldered a few times, should I try to repair this by changing caps - from the few articles I've managed to find about possible fixes, or should I throw it out on f-bay and let someone else have the headache? It looks really close to mint on the outside and inside looks pretty clean too. By the way - I don't plan on keeping the other units either as I am more into the Marantz / Pioneer gear from the 70's.

Thanks for any opinions!

Frank

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Topic - Dynaco newbie - Stereo 400 options - Maxmano356 11:45:27 05/10/13 (2)

RE: Dynaco newbie - Stereo 400 options - JonM 09:36:10 05/14/13 (0)

RE: Dynaco newbie - Stereo 400 options - GP49 08:11:31 05/14/13 (0)

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