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Realistic Stereo Mixer model 32-1100A

I recently acquired a Realistic Stereo mixer and initial testing (tape in/out) revealed the left channel has not output.
Does anyone have a schematic for this equipment that I could download?
Thanks for any assistance.
Rick G.



Re: Realistic Stereo Mixer model 32-1100A

A lot of the mixer/amplifiers and equalizers have poor connections where the RCA jacks are soldered to the circuit board; I would check there first. If that isn't the problem I would trace the output jack wiring back to the output IC which is usually an OP Amp; they are mostly 8 pin--2 rows of 4. The number on the IC is usually something like 4558 or 5523 with some letters in front of it; eBay is a good place to get them for a few dollars. Could be a dirty bypass switch if one is used.

Re: Realistic Stereo Mixer model 32-1100A

Ah, would that it was an op amp output. This is older than that. All transistor circuit. I've done a full visual inspection and continuity from output jacks to circuit board, input also. I could shotgun the circuits, but I'm hoping for a map to make it a little easier.
I was hoping to locate a schematic on open source, but if I have to purchase one on Ebay I can.
Thanks for the response.

Re: Realistic Stereo Mixer model 32-1100A

If it's that old I would suspect bad electrolytic capacitors.