Color Problem after replaced Circut Board

I just put a new circut board in my tv, and now i have a problem with the screen having a purple tint. Is this a faulty circut board, or is there some adjustments i need to check? Also i have noticed the TV will turn on by its self once a day. thanks.

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Anonymous Jul 29, 2007

i know how to get into the service mode. can you help me with a walkthrough of the menu?
Anonymous Aug 14, 2007

and you help me go through the service mode to correct this problem, or help me get a hold of a service manual?
Anonymous Aug 20, 2007

if i knew how to a fix a tv do youthink i would be posting the question?

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398 Answers

When you replace the entire board in a Zenith TV, you must make the adjustments to align the new chassis with the old picture tube. You must adjust the CRT bias and drives as well as the horizontal and vertical parameters. On the older boards there were controls on the main and CRT boards but on the newer boards the adjustments are made with the remote control after entering the service mode. Tune in the shopping channel QVC, set the color and contrast to minimum and lower the brightness until the picture is just visible. Set the CRT bias settings for a pure black and white image, then increase the brightness and contrast to get a very bright picture and if necessary adjust the drive settings so that the bright picture is pure black and white. Return the video settings to normal and then adjust the vertical and horizontal settings so that the info boxes on QVC are centered top, left and bottom. If you are not sure that you can do that right then have a qualified tech handle it for you.

Posted on Jul 24, 2007

Anonymous Aug 15, 2007

I told you EXACTLY what to do to correct your problem and you rate it "not helpful"... Is it my fault you are trying to fix your own TV when you have no idea how to fix a TV?

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