Jon S
Well-Known Member
I have a vintage near mint 1974 Sony TA-8650 V-FET amplifier which EchoWars serviced several years ago, replacing bad parts, diodes and restoring it to spec. I rarely used the amp, maybe putting a hundred hours since the repair. I have now put the amp into service and it sounds really smooth with great imaging and soundstage, beating any amp that I have or had since.
Now my question is, how often should i have it serviced? It sounds okay now and the top panel gets extremely hot (characteristic of a V-FET amplifier). I would ask EchoWars but it seems he has not posted in over a year (I hope he's okay.) I know that some of the knobs and switches needs cleaning because there is static when turning or buttons are sticky when pushed.
Now my question is, how often should i have it serviced? It sounds okay now and the top panel gets extremely hot (characteristic of a V-FET amplifier). I would ask EchoWars but it seems he has not posted in over a year (I hope he's okay.) I know that some of the knobs and switches needs cleaning because there is static when turning or buttons are sticky when pushed.