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

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Panasonic PT-53wx42 has a greenish/yellow tint to it.

I recently noticed the picute on my Panasonic PT-53wx42 has a greenish/yellow tint to it.  It's hard to describe - the whites just don't look crisp anymore.  Any idea what the problem could be.  The set is about 5 years old.

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It may just require an advanced calibration. I had the same problem out of the box. Everything had a "Matrix-like" look to it. I had a television repairman come in and at that time I watched him fumble through the "other" manual for the T.V. which only the servicemen have access to. Of most importance was the sequence of codes he had to enter to access the professional calibration menu. It went something like turn it on CH124, put the sleep timer on 30mins, push vol down twice on the set, then push menu. I googled for the code sequence some time ago and had found it then. I would try this route before you attempt to take the screwdriver to it. Good luck.

Posted on Jan 20, 2008

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Trty re-soldering the circuit board that contains the STK convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. You may be able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This gives the hour glass effect on the picture and the advanced convergence screen. This is an indication that the modules pins aren't solidly connected (meaning soldered) properly. Remove the circuit board and clean the old solder off & resolder the modules pins to the circuit board reconnected the board and then retest by again pushing on the heat sink. This is a caused by a minimum effort (a.k.a. minimum cost) solder job, probably done in some 3rd world sweat shop. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs. take the appropriate cautions working around the high voltage of the set & use a non-conduting piece of wood to push the heat sink when we doing tests. Best of luck, hope ya fix it.

Posted on Jan 02, 2008

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