Question about Audio Players & Recorders
I have a vintage (circa 1989) Sony receiver (model STR-GX4ES) connected to a CD player and a speaker set. It had been in storage for a while, but was working beautifully when I first set it up.
Then, the sound in the left channel dropped dramatically and has static. I have isolated the problem to the receiver. When I swap the speakers and the wiring, the problem still occurs on the left side. When I plug headphones directly into the CD player everything is fine, but when I plug directly into the receiver, I get no sound on the left side of my headphones.
I also tried wiring the left speaker to the B channel (leaving the right speaker on A). When I turn the volume way up, I do get sound but there is static and of course, it is way out of balance with the right speaker.
So...what is going on here and is this something I can fix myself? Thanks in advance for your help!
The headphone is tapped before the final stage of the amp, so knowing that those work properly helps to isolate the problem. I think that this model uses an IC for the voltage amp section prior to the final amp stage. That being said, the IC is probably an UPC2598 (if memory serves). I'll confirm tonight. Try resoldering any connections that appear to be grainy or have rings. Let me know what you find.
Posted on May 08, 2008
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Posted on Jan 02, 2017
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