Missing power supply for LG 20LS3. Where to get replacement?

It is a common problem for this TV, it uses a Sharp LED display panel. The problem is the data buffer IC inside the panel ether shorted, or burned open.
Vizio offers a extended exchange warranty if you have the original sale slip.

For more information, you may contact Vizio directly.

Power supply board is not the culprit - check out your inverter board which is responsible for the back lighting.

Samsung LCD LN52A650 No Dead Set BN44 00200A Power Supply Repair Fix Try this link...

Hi Lisa,
Both picture and sound missing indicate a bad main board.

Are you certain the replacement power supply is good? A defective main board or power supply can cause this problem.

Hi,


You have to check if the replacement power supply board is the same part no. as the original one, it is printed on the board itself.


I don't think that the fault came from defective electrolytic capacitor because like what you have said, the unit is new out of the box and you've already replaced the power supply board which is most of faulty electrolytic capacitor came from that board.


You've mentioned also that the original power supply board has cracked, I've suspected that the main board also has been damaged because the blinking led light error codes will be encountered if the power supply board or main board gone to malfunction. If you've confirm that the power supply board is the same part no. like the original one, then I would advice you to replaced the main board.


Please let me know if you need further assistance.


Have a great day!

Mjsazon

The tv before,the tv power supply board already have problems and was slowly dying,that why it require u to pushes 5 to 7 times for the tv power supply board to be able to sustance and hold power for the tv.Now the tv power supply board it is alot weaker or already dead.That why the tv dose not power on anymore.The tv power supply board that the board where the tv power a/c cord plug into it.Try website like Ebay.com to buy a whole new refurbish tv power supply board for the replacement.

This problems ur tv are having are only can be causes by two boards,the tv power supply board or the tv Tuner signal board.The tv power supply board that the board where the power a/c cord plug into it.The tv Tuner signal board that the board where the incomming broadcasting signal wire plug into it.This problems very easy to fix.If it is the tv power supply board is the causes,because u can check the tv power supply board carefully u will find dying capacitors parts that will bulging up or puffing up on to it tops.U have all the tools and know basic electronic just replaced all the dying capactors for all new capcitors parts same micro ferit but the capacitors voltages like 5 or 10 voltages higher for better heat resistance for the life of the tv power supply board.If it is the tv Tuner signal board,very hard fix and determine where the dying parts are in this board,because this board is cover with many ICS chips on this board.If the tv the Tuner signal board is the problems best just buy the whole refurbish tv Tuner signal board for the replacement.Or u can tries websites like Shopjimmy.com,Ebay.com to buy the whole refurbish tv power supply board too,if u don't know how to or have all the tools to replaced those dying capacitors parts and also can buy the whole refurbish tv Tuner signal in these two websites too.

Now,there is no power to the tv at all?Yes.Tries tv unplug,replug it back like about and hour later.That the resetting tv back to the factory setting.The tv now should be working again.If tv still have the same result,tv power supply board have problems,that the board,where the power a/c cord plug into it.Check the tv power supply board fuse,because u lost main power to the house.If u lucky,the tv power supply board only have a dead fuse,fuse is near where the power a/c plug,plug into tv to get it power.Fuse can buy it anywhere like Radio Shack like $1.50.After u repalced the fuse,if tv still getting the same result,than sorry ur whole power supply board have problems and it is dead.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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.