Question about RCA P52960 52" Rear Projection Television

3 Answers

Rca P52690 Distorted image

Hello...I have this Rca P52690 and while watching tv...the image became distorted on all 4 corners.....it's like i'm looking at tv thru a glass.....I read that the IC STK730-010 might be bad....Has anybody experienced the same problem b4...? If yes what was the problem....? Thank you

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  • Goldenman Apr 12, 2008

    I want to mention that my Rca is a projection tv...and as i said image is distorted on all 4 sides (top/bottom/left/right) centre image is not bad...When it happened it went back and forth to good /distorted image (so it tells me that something got burnt) till it stayed on distorted image...Thanks

  • Goldenman Apr 12, 2008

    Thank you sir...apreciate it...

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3 Answers

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Dear Goldenman the IC you have specified is a converegence IC as Ekse has pointed out.. The problem is the IC has gone bad/ It is difficult to service this your self but if you wanna do this yourself i can help you replace it. It should cost you around 25-50$ for the IC

Posted on Apr 12, 2008

  • eagle338
    eagle338 Apr 12, 2008

    Check if the value of the IC are as follows before replacing
    Main v. regulator IC U4101 (STK730-010) should have a negative 40 volts
    at pin 1 (pin 3 hot ground as reference) if working. If its zero volts then the IC is bad and you have to replace it..

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Yes its most likely the convergence IC problem, you should perform a convergence test from service menu.

If you still have the problem after setting up convergence, you will need to check the fuses at the base of convergence IC and replace the convergence ICs or the whole board.

A repair tech should be able to do the job for you.
Your tv isnt a lcd so it cant be lamp problem I supose.

Posted on Apr 12, 2008

  • Ekse Apr 12, 2008

    what else do you want us to tell you? you need to replace parts from inside the tv.


  • Ekse Apr 12, 2008

    im disapointed by the rateing you gave me.

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First of all, if you have any warranty or service plan, exercise them. Secondly, you can bring it to a local service center. There are also a lot of technicians willing to work on-site at your home. You mentioned an IC that needs replacing. I cross-reference that and it seems it is a very inexpensive part ($7.90) that you may be able to replace yourself if you have used a soldering iron. It is simply a switching regulator. It says it controls power switching on CRT displays. If your TV is a CRT don't bother with it, the repairs can cost you more than half of what a VERY decent LCD would. Go into a local Radio Shack and ask about the 37'' AKAI, it even has a built in DTV tuner, the picture is beautiful. It supports 1080i/p but it is scaled(1366x768).

Posted on Apr 12, 2008

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Thats a strong possibility as the STK730-010 is the power amplifier for the convergence circuits. Its an inexspenive part to replace and easy to install. You can get a replacement IC at the following link and they provide free on line tech support for free as well as send instructions on how to replace the IC. Here is thier link if youd like it. I am one of thier on line tech supports as well as one of thier board rebuilders.
http://servicemanuals.vstore.ca/

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It's possible it could be the problem cause thats the power supply ic to the convergence circuits and it only has 1 where most has 2 stk's you can get a replacement ic at the sight i posted for you with free tec support
http://servicemanuals.vstore.ca/

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Probably the convergence circuit, the STK output devices, associated resistors, power supplies, etc. Generally about $250 to repair. Have a service tech come out and check it out, also have them eveluate the condition of the crts before going too far. Good luck

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