Question about Philips Magnavox 27MS343S 27" TV

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No picture on magnavox 20MF231W TV

The sound works, but no picture. When I turn on the TV the screen is white.

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  • kateb75 Jul 03, 2008

    I don't recall popping, but it's possible.

  • kateb75 Jul 03, 2008

    If the main power module is bad, I don't suppose it would be worth fixing, would it?

  • kateb75 Jul 09, 2008

    There are no lines of any sort on the screen, just a bright white light with perfect sound. I think there was some popping. What is a flyback?


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Hi there

You should try to replace the electrolytic capacitors found at the back of your TV near the power supply. I replaced 2 of them in my TV but it still didn't work, then after about 15 or so later, i got it to work.

This is what they look like:
No picture on magnavox 20MF231W TV - c748b69.jpg

To replace the electrolytic capacitors, you will need to remove the housing from your television.

Thank you for using FixYa. Have a nice day and please remember to rate this solution as FixYa!

If you need more help on this, just ask me.

Kind regards
Dustin Ellse(BearWeb)

Posted on Jul 03, 2008

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Look in the area of the large signal board that will be the one with the flyback and power supply and deflection circuits on it to your right flybacks are known to fail on these models as well as a high voltage leak
was the set popping from time to time ?

Posted on Jul 03, 2008

  • 2 more comments 
  • Deeps . Jul 03, 2008

    this sounds like the main power module in the tv has gone bad.

  • Deeps . Jul 03, 2008

    bad power supply for the picture tube can cause this it can be.

    I am still finding solution for your problem..reply with a comment for more help

    Please don't forget to rate this solution

    Good Luck

  • Deeps . Jul 03, 2008

    You find no picture at all or is there any blue screen or black n white lines on the display

  • Deeps . Jul 04, 2008

    if here is perfect audio but a white screen with horizontal lines.then on the CRT circuit board(picture tube), you will find resistor. The location of the resistor is printed on the
    bottom of the ckt board. replace with new resistor. This will solve your problem.


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