Question about Panasonic PT-51HX40 51" Rear Projection Television

1 Answer

Just got a used tv its a panasonic PT-51HX408 and cant seem to get the colors to align perfect they will move just seems as theres a shadow so it looks as double vision. Also greenish color on lower left of tv

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  • chilfman96 Sep 08, 2009

    It will adjust the red and blue just when its adjusted the best it will still show extra green in bottom left corner around a 3 inch square area

  • SD Tech
    SD Tech May 11, 2010

    In the customer menu select convergence and the multipoint---if any place that a color(red or blue-don't adjust green!) will not move in some way--one of the convergence chips is bad.

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  • Panasonic Master
  • 14,553 Answers

1.) This set uses two STK 392-110 convergence chips--they are black, 2 1/2 inches wide, about 1 1/2 inches tall with 18 pins each; they are located on two metal heat sinks side by side. You can buy both chips for about 12 dollars plus shipping on Ebay.

2.) If you can do this repair yourself I have start to finish step by step instructions telling what you will need and how to do the whole job. Let me know if you want the instructions and I can email them to you---etower.766@netzero.net

3.) I have done hundreds of these sets and usually it takes about an hour---if you are not able to do the repair-shop around--this is the slow time of year for TV repair shops---MAKE SURE WHOEVER YOU GET TO DO IT REPLACES BOTH CHIPS or you will have the same trouble again soon. Most shops charge 300-400 for this repair but I have done hundreds of them here for 200-250--any good tech can do the job right in your home.

4.) The reason the chips fail is the back of them is metal and a heat sink compound (white grease) dries out after several years and one of the chips reaches a point where it cannot move the heat fast enough.

5.) There are also some light blue resistors in front of the chips that need to be looked at/tested--if any are discolored (white in the middle) they need to be replaced--most of them in this set are 2.2 ohm(marked on them) and 2 watt rated.

6.) If you have any questions let me know and if you want the instructions email me. This set is a set that a do it yourself person can do if they have directions and some skill at soldering.

7.) I do this here for free so if this has helped you please take a minute and give me a vote here.


Contact me if you have any questions or need more information.

SD TECH

Posted on Sep 08, 2009

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