Question about LG 32LK330 TV

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Lcd tv powers on but no video, blue light is on in the front and I can see the back light through the back but screen is dim

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You have an issue with either capacitors or the inverter unit inside the TV. This is common with LCD monitors / TV's.

If you feel confident and competent enough, take apart the TV and check the capacitors on the power board. Some may look "blown" (bulging out at the top) and will need to be replace liked for like. Worst case it will need a new inverter which will cost around £20 at most.

I've fixed 100's with the same symptoms.

Posted on Dec 11, 2014

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Posted on Jan 02, 2017

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
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http://electronicshelponline.blogspot.com/
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LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:

Symptom: No picture on screen but LCD TV still has sound.
Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture
Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound
Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits
Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.

This is a power supply problem. Try to check the fuses ,fusable resistor ,capacitor and transistor in power supply board.

Hope it may help you;

Regards,
VOTIT

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Symptom: No picture on screen but LCD TV still has sound.
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