It's suffering from the usual crackly volume / input selector issue which is not too bad, it's still usable.
Today when switching on, there was a bit of hum initially that then disappeared (set to a line-level input), which makes me think maybe it could do with a proper refurb, particularly all the electrolytics are still original.
Edit: I found https://www.amprepairservices.com/contact he looks very knowledgeable.
I might open up the PSX myself and test it under a dummy load, to see if the smoothing caps are OK, and ask him to look at the Cyrus 2. I guess a good way to start is to look at the time-constant of the +- rails into a dummy load, removing one cap at a time.
Today when switching on, there was a bit of hum initially that then disappeared (set to a line-level input), which makes me think maybe it could do with a proper refurb, particularly all the electrolytics are still original.
Edit: I found https://www.amprepairservices.com/contact he looks very knowledgeable.
I might open up the PSX myself and test it under a dummy load, to see if the smoothing caps are OK, and ask him to look at the Cyrus 2. I guess a good way to start is to look at the time-constant of the +- rails into a dummy load, removing one cap at a time.
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