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Sony KV-27HFR - Bad Tuner?

This may be a toughie.... the set will tune in a station but will not lock on, it just drifts back and forth, alternating between a picture and snow. I replaced all the caps in the tuner section and it made no difference. I can't locate a pre-scaler IC (which I've seen go bad on other sets), so I'm assuming it's built into the tuner itself. Am I looking at a bad tuner at this point? (Part# 1-463-771-11) I'd normally junk anything needing a tuner, but this set just has too nice a picture to give up on it. Thanks for any advice.

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Reply to
Chris F.
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Have you tried resoldering the bad joints in the IF block? Very common on these uints.

Leonard

Reply to
Leonard Caillouet

I will give that a try, thanks.

Reply to
Chris F.

Yup the voltages are all good (don't have the manual but the voltages are marked on the board). A 5V supply was measuring 4.7 (with no measurable AC ripple) but I don't know if that's a problem or not....

Reply to
Chris F.

The most common place is on the AFT coil, but check over everything around the IF IC.

Andy Cuffe

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Reply to
Andy Cuffe

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