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27" proscan tv

Every once in awhile, the screen shrinks to about a 1" line. In about 5 to 10 minutes the full screen returns. I'm not sure how old this tv is, it was given to me by a friend. Do you think it's worth it to have it looked at? Same symptom on a Zenith SR2768S

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SOURCE: 27" proscan tv

This is a sign that there are either bad caps in the vertical circuit or bad connections at the vertical IC. CAn you solder? If so, resolder the pins on the vertical IC first and post the results here. The vertical IC will be a small flat IC attached to a heatsink with about 9-11 pins. It may be marked LA7837 or something similar.

Keep us posted.
Dan

Posted on Sep 24, 2008

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SOURCE: Need Owners Manual

tv.manualsonline.com/manuals/mfg/zenith/c27j28c.html
you can downlad a free manual here or u can register yourself and they ll send a manual copy to ur mail when they get it

Posted on Jun 16, 2009

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Keep us posted.
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Hope this be of help/idea. Pls post back how things turned up or should you need additional information.

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