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It's not the way they are supposed to be, check ALL resistors in the focus circuit. Make sure they are correct, I mean like, spot on. I'll bet you find a bad one...
Edit: Also the POT can go to crap, I've replaced all of the above and was able to get the focus nice and sharp with the control set somewhere in the middle. Drifty resistors in related circuits can cause it to be off too.
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Kyocera R-661, Yamaha RX-V2200
National Panasonic SA-5800
Sansui 1000a, 1000, SAX-200, 5050, 9090DB, 881, SR-636, SC-3000, AT-20
Pioneer SX-939, ER-420, SM-B201
Motorola SK77W-2Z tube console
McIntosh MC2205, C26
Last edited by zenithfan1; 05-31-2013 at 01:31 AM.
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