LG LCD tv freezing and affected by power switches, light switches, etc. Have always run it through a surge guard. Problem happens with or without surgeguard. YV almost 3yrs old

Hi Dfhamilton,
Damages due to lightening surge can go to any extent in a tv set. If you can, please open the back cover and check the fuse. Replace with the same rating one if you find it blown. Switch on the set. If it works, enjoy watching. If it blows again, please consult some TV tech.
Good Luck.

I happened the same problem and the solution must change the power pack

90% to 95% ur tv have a dead power supply board only.5% ur tv could have both dead boards the tv power supply board and the main tv Tuner signal board too.The tv power supply board.That the board,where the power a/c cord plug into it.The tv main Tuner signal board,that the board where all the exstented devices and the tv incomming broadcasting signal cable wire plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement first.The tv problems should be fixed.If not than the main tv Tuner signal board is dead too.Must be replaced also.

sounds like you have had a brown out or a surge they go strait pass the fuse and fry almost all the electronics in the unit. due to the damage that occurs we do not fix these units we write them off as respect to our customers. some techs fix them but they never last. far to much damage. but there is good news all insurance companys cover surge damage if your not insured and even if you are if you have suffered a surge/ or brownout then your electricity provider must replace the unit damaged. and from now on always use power boards with surge protectors in them they cost about $ 9 and cost far less than a $ 1000 tv

best of luck to you

merry christmas

please remember to rank this advice

Hi,

your TV is having a power problem. The power supply board is defective that's why the TV won't power up. Its receiving power but it cannot transfer the current to the necessary part of the TV because a capacitor, diode, etc may have been faulty. Until these bad components are replaced, the TV might not come on.

This may have occurred as a result of power surge/irregular power supply or excess power that may have entered into the TV previously.

If you know about TV repairers, I would suggest that you open the TV and read the power board/panel with a meter, detect the bad component and replace it. Take note that TV stores a lot of current that can shock, so leave the TV for a while before you open it.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you.

I wish you good luck.

There are about 4 main power supplies in the TV, standby 5vdc (always on and running 24/7 the second the TV is plug into the wall outlet), the other 3 are switched on when you hit the power switch on the TV or on the remote, every time you power it on the power supplies will see current surge when it turn on, which can stress the components, not much you can do, if the TV was design correctly to take the current surge into account then it should have no problem, but so far I have not seen really well made TV any more, does not matter the brand, youcan see that at FIXYA with all the problems everyone has with the TV's.
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

An electrical pulse from the thunderstorm has affected your TV. (Was it on a surge protector?)

There is a small possibility that it will come back.

Unplug the television and let it sit for an hour or more and then re-plug it.

If you need to get a new TV, also get a good surge protector such as Panamax.

can you tell us how many times the stand by light blink exactly??

also does the white flash remains or disappear in few seconds?

I was told that these clicking noises (which happen on my Magnavox LCD too) were due to the "power required" at the internal switch. Seems that the power required to immediately turn on the TV is too much for a standalone household outlet, so it "surges" power in a series to get enough there. Hence, the clicking sounds are actually mini power surges to send more power to the internal circuits to turn the TV on.

If your set is like mine, these noises generally stop after a minute or two, correct?