Projection TV shorted yoke

Jun 01, 2006 2 Replies
S

I have a JVC 56" rear projection TV (model AV-56WP30). I have been troubleshooting a problem with the red projecting a wavy line near top of screen (see

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I have discovered that the input into the yoke from the convergence board is shorted (I didn't check whether it was horozontal or vertical). I found this by disconnecting the output from the convergence board and measuring resistance accross each of the two outputs +/-. My question is, is this usally a simple fix and what should I look for?



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D

What is the inductive impedance of the yoke at 60Hz and 1KHz?

Are you sure it is shorted? What resistance did you read? Normal is usually around 2 to 8 ohms depending on the specific yoke design.

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S

I don't have a meter here to measure that but if necessary I can get one from work.

I took the yoke out and found that it is not shorted. Resistance of both circuits is around .5 ohm. I guess I did not find my problem.

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