Question about Philips Magnavox 51MP392H Rear Projection Television

1 Answer

Picture problems I have a magnavox 51MP392H rear projection telivision that I bought three years ago. It has worked fine until last night. I was watching the set and all of the sudden I have double print in the top right and lower left corners. The double print is in blue. I went into the manual convergence menu and tried to adjust but those corners wont adjust. help

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  • bathman Dec 02, 2007

    how much are we talking about to fix it?

  • Anonymous Dec 03, 2007

    I have the same problem, so let me know too. mine is two years old and and it just started doing it two days ago. I haven't touched it yet



    Scott

  • golfsharky Dec 04, 2007

    i also have the same problem but my unit is almost 4 years old

  • kagemusha Dec 07, 2007

    Mine also has this problem. We had it on in the morning and all was fine and came home a couple hours later and red wavy picture in the bottom and the corners. Looks like a 3-D movie without the glasses.

  • Anonymous Dec 11, 2007

    Hi I have the same problem as well with my 55 inch which is 4 years old and the techs have told me it's something to do with the convergance modules and will cost around $400 to $500 if I take it to there workshop.

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  • Master
  • 934 Answers

The convergence amps have most likely failed. This is the number one leading cause for the symptom your describing and the most common failure on that unit.
Your Tv take two STK392-120 Sanyo Ics for convergence amps, located at Ic7404 and Ic7405 on the board and mounted to a rather large aluminum heat sink. In addition you will most likely have to replace R3159 and R3160 (6.8 ohm 1w) resistors and test the remaining low ohm resistors for change in value.
A shop would really be earning their money on this particular unit if they charged $400 - $500 for the repair. It is an extremely difficult set to work on and there are a number of little problems that can reach-out and bite when attempting the repair.
Good luck!
Bill

Posted on Dec 12, 2007

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