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Tv powers up , very good sound but no picture, what could be wrong

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Try re-soldering the vertical output IC

Posted on Apr 30, 2008

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Posted on Jan 02, 2017

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It all depends what has led up to the problem, however if there has
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Sound, but no picture


Locate vertical output IC = solder all pins = two off-set rows,
then try again................part location IC301 , or 401 ?

2) possible bad CRT = turn up screen voltage slightly = did pix pop back on ?..................................T.

Please rate this solution.........................

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zenith have many problems with crt (picture tube) they comes be short or one or more canon fail, there are nothing to do, replace the picture tube, and thats a lot of money for an old tv...good luck ps adjusting the screen and resoldering the picture tube card could help but remember there are many dangerous circuit in a tv...

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