Question about Philips Magnavox 42MF521D/37 Television

3 Answers

Everyone was out of the room when the TV actually went off. When we came back in we tried turning it off and on, leaving it off for a while, taking the back off and having someone we know replace the resistors?(look like double A batteries soldered onto power board) Now when we plug it in there is no picture and the tv is making a chirping noise. I have read that it might be a convergence problem and there are kits for that, but do not want to spend more money on this thing if that is not really the problem.

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  • bobbiejoh May 31, 2010

    I have looked to see what the inverter board is and now am more confused than ever. Apparently there are several types???

    Can anyone give a step by step troubleshoot for dummys? I know less than nothing about electronics.

    Thanks

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3 Answers

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Please verify the exact model # of the set.

Thanks!!

Posted on May 31, 2010

  • bobbiejoh May 31, 2010

    The model number is 42MF531D/37



    Not sure why, but when I type that in to FixYa it always changes it by one number.



    Thanks!

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  • Master
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No convergence kit is not going to solve your problem this is another circuit having an issue firing on



hope this helps
Robb

Posted on May 31, 2010

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Hi,

Well friend chirps come from the primary side of the power supply normally you may have had a serge of some kind and it blew the power supply. or chirps also come from the inverter board, this when coils short out.

This is not a Convergence Problem.

The unit is worth Fixing as Either board would cost you around $150.

with your problem check the 24v line make sure power supply is supplying the inverter if it is rule out inverter then listen to pin point the noise. i would use cold spray on the components to find the problem.

Now you would ask COLD SPRAY?

I would explain you.

well you may not need it if you open the set and listen to the chirp. But if you can't pinpoint it the spray changes the temperature to the failing part and once the spray hits it, it should alter the chirp. you should not have any problems because you can here your problem, it's either your power supply board or inverter. just open set listen and pinpoint problem that's, simple well.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!


Posted on May 31, 2010

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