Well I found the cause of the screech. It's the darn volume pot. I have cleaned it so many times, but it never helped. There seem to be dead spots and other issues internally. I have to go back and forth several times to get the sound just right. So scratchy and dropouts as I turn it. I found the perfect position and all has been well, but I guess that spot wasn't meant to last for ever. It started getting muffled, so I tweaked it again and now it is clear and the screech is gone.
I've searched for over 5 years for a replacement pot (63-10263), but can't find one. Some day I will find one.
Thanks for all the input, and if anyone knows where a volume pot can be found, let me know.
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Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL
Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650
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