Question about Panasonic PT-53WX42 53" Rear Projection Television

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Blue Shadow Hello, pauldonp recommended me to you because of your expertise in this subject. I have a panasonic model: pt-53wx42f which has a blue shadow on the screen. After messing around with the convergence menu, I find that the blue crosshair will move up and down but not left to right. I read a few forums on this same problem and gathered that the problem is usually the stk392-110 chip, so I replaced both of them with the stk392-180. I started it back up, and have the exact same problem still. I checked the ohms on the 2w resistors, and the surface mount resistors around the chips and they all checked out good. Visually I don't see anything wrong... Any suggestions?

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Re: Blue Shadow

Check power supply voltages to run convergence amps....usually
around 20 volts + & --........should be present at the two watt
resistors....beyond basics,you might need a diagram to trace
the path of the blue horiz & vert....might be an open connection somewhere.........also, check for an open pico fuse.....not too
likely,tho,becuz of the symptom.....You might take the time to go over your own work,....I often backtrack when I get the same
as before.........Let me know.................T.

Posted on Nov 16, 2007

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