Zenith Big Screen - blue convergence problem

Old 08-02-04, 10:02 AM
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Zenith Big Screen - blue convergence problem

Can anyone help? The blue convergence is way off and pin cushioned at the top and bottom. The TV acted up for over a month. When first turned on, the convergence would be way off but in a few minutes it would become aligned. But now it's out and staying out. Red and green are fully functional and adjustable, blue is way off. pin cushioned and will not ajust. Does anyone know what parts need to be replaced? Appreciate any any help!! BigBear
Old 09-03-04, 11:39 PM
Projo man
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convergence ic's

Sounds to me like one of the convergence IC's have failed. That's the first candidate in my book. Most Zenith use a STK392-110. There's 2 of them. Replace them both. Also look for burned resistors on the convergence board before changing the IC's.

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