Question about LG 50PC3D 50 in. Plasma Television

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50" lg plasma tv when i turn it on it shuts down in a few sec after doing this several times it will eventually stay on what can i do

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The power supply board have problems,it not giving the tv the right votage anymore.That why it shutting down,not sustancening power to the tv anymore.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power board for the replacement.

Posted on Oct 16, 2010

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Posted on Jan 02, 2017

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Why doe's my sanyo 50'' plasma tv turns itself off


You have a fault on your HV switching supply Board and/or your Vertical or Horizontal control boards. The stk 917-811A x2 (Power Modules) of them could be Faulty. You need to take your set to a Professional Tech. work shop. The cause normally is Mains Voltage surges and erratic mains supply inputs.

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You own a plasma tv throw it away and buy either lcd or led Your tv is not worth fixing buying a new one will be cheaper and will last longer

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CAN'T TURN TV ON. SWITCH FLASHES ON/OFF SEVERAL TIMES THEN STAYS IN THE ON POSITION BUT WITH NO CONNECTION.


Ok,
Whats happening hear is that the power supply has a fault or is detecting a fault from another board and shutting its self down. There's an over-voltage problem somewhere on the circuit boards, its an LG tv so its easy to service and shouldn't cost much because its plasma.....

http://tvtechwork.webs.com/

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LG 50 inch plasma has trouble powering up. have


Power supply board have dead capcitors.Know how to solders?These capacitors usally bulge or pop open,replaced these capacitors will solved this problem.Or tries websites Shopjimmy.com,Ebay.com to buy a Whole reburbish power supply board for the replacement.

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2 Answers

Power shuts off


Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet.

If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20. And most cases the new part cost less than $15.

I hope I shed some light on the subject for you.

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1 Answer

MY TV shows a blank screen it is a LCD LG TV


digital board part number #674b00040a

hard drive part number 6871vmmt71d

parts cost from LG is about $630.83

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1 Answer

TV not coming on or shutting down after on a few minutes


yes its the problem of the capacitors getting heated up on the main board aND SO THE TV GETS SHUT OFF AFTER IT GETS HEATED.ON THE MAIN BOARD OF THE TV CHECK OUT WITH THE HELP OF A MULTIMETER and replace the faulty capacitors and then it should work.

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