My lg tv will not turn on just stopped working is it the power supply?

I think the power board is broken ,you need replace it .you can have a look this website:https://www.abctay.com/wholesale-lg-eay62810801-eax64905501-22-lgp475013pl2-power-supply-unit-for-47ln5400ua-47ln5454ct-50ln5100ub-p-487.html

TV is too old. Buy a replacement. Stop throwing money away.

Tries tv unplug,replug it back like about an hour later.See,if the tv will resetting self and working again.Not.The tv power supply board it is the causes and the problems.That the board where the tv power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv power supply board for the replacement.

Hello,

It's the problem of overheating in the power supply board of the TV.on the power supply board of the TV there are few capacitors and IC.any of this IC is got short or may be weak.so due to this when you start the TV the current passes from electric outlet to the power supply board of TV.but when the current passes from that weak/faulty part at that time current gets stopped or slow and the board overheats and TV shuts off. this is a common problem faced by many other users too.the possible option to solve this issue is to check the power supply board by a meter and continuity tester and replace the faulty component on the board which is short due to which power supply board is getting overheated.its bit technical job but yes its not at all a costly repair to do or get it done by the technician. for required parts it can be easily available from local electronic hardware shop.

Hope this will helpout....

The tv power supply board is dying.That the board,where the power a/c acord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Tries tv unplug,replug it back like about an hour later for the tv resetting itself back to the factory setting.Tries again,tv should be working.If still getting no power at all than the tv Tuner board is dead,because pictures freezing and dies completely is the causes so it is not power supply board problems.The tv Tuner signal board is the causes,that the board where the incomming broadcasting signal cable plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish tv Tuner signal board for the replacement.

This sounds like you have a known issue with the power supply board. The power supply is seeing a problem (typically with the 5vdc) and will shut down the TV just after you try to turn it on.

If you keep trying to turn on the TV, eventually you will catch the 5vdc circuit working and the TV will work until you turn it off.

Soon, the power supply will fail to where the TV will not come back on.

The power supply is around $160 and up. I can find your part number if you give me the rest of the numbers after the model number (example "A.SUSLLJR").

Or, you can have someone in your area fix you TV.

Good luck. I hope my information has helped you.

Sounds like a popped fuse or worse...a blown power supply.

Check with LG about service guides for you TV if you want to take a shot at locating and replacing these parts.

Good luck and be careful.

YOU PROBALY HAVE A BAD Y SUSTAIN BOARD OR POWER SUPPLY. POWER NEEDS TO BE DISCONNECTED FROM THE Y SUSTAIN AND THE VA & VS VOLTAGES CHECKED.