Lg 42 px d15 led wont turn on

LG 42LS5700 - LG.com

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Widescreen TV Black Screen - Repair LCD LED PLASMA ...

? 3:41
https://www.youtube.com/watch?v=RbZncfiOXQA
Jul 13, 2011 - Uploaded by FixItUrselfDummy
Fix your tv with black screen blinking light, popping sound noise. ... Watch QueueQueue ... TV Black Screen - Repair LCD LED PLASMA - Problems SONY LG .... I have a 60 inch samsung DPL tv how can I stop the humming or ... What do I do if my tvturns on but its just a black screen so sound no picture?.

There could be several things going on, I would start with having the power supply checked. I've worked on several LG sets from that time frame that all had bad capacitors in the power supply causing all sorts of issues

It could be the main or power board, either would cause your issue

Check and replace its main digital board. after replacement, somde adjustments have to be done, and you have to enter its service mode option to do it. Really it is a skilled work, that a customer who has no idea in electronics can do.

THERE IS A INTERNAL PROBLEM !!! If it is still under warranty, take it back

This may seem like a generic answer, but it's not. Your Power Supply board may have a few failing capacitors. A capacitor will often "fly right" after it warms up a bit. You should stop using it until this problem is resolved. Most often the capacitors are used to filter out "ripple" from the DC voltage it is in circuit with. When the capacitor is weak or failing, the "ripple" or unclean voltage can cause damage to the Y-Sustain board. An easy fix can become a costly repair. I hope this was helpful, best wishes.

If the program sound is audible, the TV video circuit has failed.

Could EHT or video circuit problem. contact service center for help

Tell me the sympton please.
Do the led stay red on stanby?
Do the led change to blue when trying to turn it on?
Every detail will help me to get you an accurate answer

hello there you have a dry joint on the led light open up remote solder the led(should be located on top of circuit board) any probs or not too shore email me at [email protected]

Have a look at my 'I broke the glass post'