Having problems with your Flat Panel Televisions ?

47LG50 screen light goes black after about 45 minutes of being on, sound still ok. Turn the tv off and back on and its fine for another 45 mins to an hour. The on/off light goes from red to blue-ish when screen goes black. As a note I took out the power board adn checked the capacitors and none where bulging or burst (someone said maybe they are drying out)...does that sound like the problem of is this an inverter board issue. I just want to change the what might be the most likely issue



Answers :

Good day!

That problem is commonly happens when the inverter board failed.

But before you replaced that its better to check this out first.

Just follow this simple and D.I.Y procedure on troubleshooting.

\015\012
    \015\012
  1. Remove the back cover of your TV.
  2. \015\012
  3. Look for the Inverter board.
Inverter board looks like this:
nineng_6.jpg

3. Check the input voltage of the inverter board if have 24vdc.Using multimeter (range on DC)
4. If you have 24vdc,check the output voltage of the inverter board it should have 500vdc.
5. If you don't have 500vdc output on the inverter,replace it.
\015\012 6. If the you have the output voltage on it,the problem could be \015\012the busted cold cathode light (C.C.T).Replace it.

I hope this solution will be helpful.Thank you and don't forget to rate my answer.

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