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Main system control memory IC fault. Check and replace it. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
The most common problem is the Power/Backlight Inverter Board. There are 6 mini transformers on the board, one goes bad and the TV will turn itself OFF automatically for " Protection Mode". Replace the whole board or replace the bad mini transformer.
Whole board, BA71F0F01042
Mini Transformer, LTZ2PC0MS008
Hi, I own the same TV and had the same problem. It's the #1 plaguing issue with flat panel TVs made by Funai corp. Emerson is made by them.Normally, when this happens, the TV goes into " Protection Mode " because of a failing circuit board.
The most common thing to go out on flat panel TV 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. I can only make guesses with the symptom. I'm willing to bet you have the same problem like mine. One of six Inverter Transformers when bad on my Power/Backlight Inverter Supply Board. I replaced it and it works fine again.
It's the #1 plaguing issue with Emerson flat panel TV. Normally, when this happens, the TV goes into " Protection Mode " because of a failing circuit board. The most common thing to go out on flat panel TVs 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'tactually look at the tv over the internet. I can only make guesses with the symptom.
You have a few choices: 1. You can try leaving the TV unplugged for 30 minutes so the TV can reset itself. 2. If by chance the TV is still under warranty, go that route. 3. 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. 4. Pay a TV shop to do the repairs. It maybe costly, but get an estimate of how much they will charge. That way you can decide if it worth repairing or replacing the whole TV. I hope I shed some light on the subject for you.
This is Emerson's #1 problem.
The Inverter Transformer on the power supply/backlight inverter board goes bad. It's what powers up the screen for your TV. When the part goes bad, it doesn't have enough juice to power the screen and the TV automatically turns off. You have 5 Inverter Transformer on your board.
You can fix the problem by replacing the whole board or replace the bad Inverter Transformer.
Here's where you can get a new board for a good price: http://www.shopjimmy.com/catalogsearch/result/?q=lc320em9+inverter
Or, here's where you can get replacement Inverter Transformers: