Question about Toymax Magnavox 37MF231D 37 in. LCD TV

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The master lcd inverter bd. has a red led that goes out after few seconds

The screen flashes but won't stay on,, I have repaced the power supply board and same problem

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Terry Dovre

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Hello, that set has a pair of inverter boards (back light boards) that usually are the cause, you may want to look for bad connections on the transformers and check the little white fuses to be sure their good. But these sets are getting old enough that I've seen the florescent tubes in the display go bad and cause the set to go into shutdown. If you want to try the bak light boards, I found these on E-bay for $20......thanksThe master lcd inverter bd. has a red led that goe - 2f196b76-eae3-4989-b91a-2bf4ff61cb82.jpg

Posted on Aug 14, 2014

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Abcd

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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

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you will probably want to find a servicer in your area to assist with this repair
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Screen going black, green LED staying on

Check to see if the image is Dimmed. Chances are the power supply on the FPD is either dead or not supplying power to the back lights.
Your problem is the power supply or the inverter on your board, you can replace it and it will be fixed.
Easy Fix REALLY EASY FIX
(inverter is what supplies power to your backlights. A lot of the times the reason a monitor goes black and the green power button is on, is because the backlights shut off. in most designs of the 1730 the inverter is embedded on the power supply. That is most often the case on this problem. Power supply/Inverter=Replace it and you will have a spanking new looking nice monitor working again. :)
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