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My Phillips TV (42PFL7422D/37)light comes on to show power but the screen does not light up. It does have sound. Guy on line stated it most likely is the T-con board/LCD controller. That this is common on Phillips TV. Does this sound accurate

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Try to to put-off your lights and see if you have slight illumination on the screen, if it does, its the t-con board. If totally none, you have to change your Inverter board.

Posted on Jan 20, 2015

Testimonial: "This was helpful. The screen is dark. Should I replace the Master Inverter, Slave Inverter or both?"

  • Its Me Charlie
    Its Me Charlie Jan 21, 2015

    If you will ask me its better to change both Master and Slave for sure and if the price is not much.



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6ya staff

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Posted on Jan 02, 2017


olayoju victor

  • 191 Answers

SOURCE: sound no picture, which component is tcon board? where all audio/video/cable/hdmi plug in to?

for bn94-00963b go and change your backlight inverter

Posted on Oct 05, 2008


  • 70 Answers

SOURCE: Philips Magnavox 37" LCD Flat

Disconnect the LVDS Cable that runs from the small signal board to the display panel and apply power,if the screen comes on,the Small signal board (aka Scaler Bd ) is the faulty board. other than that,all that's really left that has gone bad for me is the logic board.

Posted on Jul 07, 2009

Elias Pedraza

  • 53 Answers

SOURCE: i have a phillips 42 inch lcd model 42pfl7422d

Hello Mendez the problem that your tv set is having is coming from the inverter board this board provides the high voltage for your backlight without the backlight no picture, what i want you to do is go online sometimes this happens go online look for the service manual for your tv set once you find it get it look for the inverter boards location and check the fuse that is on that board sometimes they blow and it will give you this problem if that is your problem you save money and the hassel of taking it anywhere to get it fixed,if it is not the fuse then the inverter board needs to be changed out and that will fix your problem thank you hope this helps.

Posted on Aug 19, 2009


  • 4 Answers

SOURCE: Vizio VW42LHDTV10A lcd. Has vertical lines and siren like noise !

Vizio tech says main board.

Posted on Aug 30, 2009

Chi Chu

  • 8457 Answers

SOURCE: has sound but no picture

Replaced the LCD inverter board,to get picture back.

Posted on Dec 17, 2009

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If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
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The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
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Take it to a repair shop.

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If the backlight of the LCD-panel does not function, (no picture) then Master and/or Slave inverter are defective. Inverter boards are screwed to both sides of the LCD display, if they have revision 1.2 boards then they will need replaced with revision 1.3 boards.

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