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Timothy Meydam Posted on Sep 25, 2016
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My LG47LN5200-UB TV main screen does not turn on. What is the problem with my TV?

The stand-by red light at the bottom of the TV turns on and if you shine a flashlight into the front of the screen, you get some graphics.

1 Answer

Richard Warren

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  • LG Master 2,548 Answers
  • Posted on Sep 25, 2016
Richard Warren
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Joined: Feb 08, 2014
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Check the mother board not faulty,common problem.

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1answer

I've a LG model 42LV3730, it has no sound and no picture. The ON light switch on a while then off.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
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I turn on my tv LG 42LE5350-UB I can see red light on front but does not turn on no audio and image can not see, what can I do?

Check and replace the damaged component/s at its main board. Contact any service technician. 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/
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Hi, I have an rca 65 in led lcd. When i plug to wall outlet red light on front of tv comes on. When i turn it on (using control or tv button) tv screen flashes once (on left bottom corner). Screen stays...

If this is one of the first lcd TVs that set on a stand and are bulky in the back of the tv there is a place to change the tube it is a box and you will have to change it you can get on eBay and order the part I have one and have changed it a few times what happens to them is it comes in a box and if there is a power outage the little fan can't cool it off and they go bad if you still have your ouner ship booklet it will have instructions on how to change it isn't to bad to do
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What if the tv is off and the red stand by light is not on what does that mean

A lot of people are confused about turning the TV 'off'. If there is a light showing when the TV is 'off' it is merely on 'stand-by' and not truly off. Off means being physically turned off by either the switch on the set or the mains. using the remote to turn 'off' the TV will not turn off it will only put the set into stand-by mode. In many cases if the TV is in stand-by mode, and then switched off, when the set is turned back on, it will still be in stand-by mode, and will need to be turned on with the remote. (even if you unplug, in some cases) All TV's are different, so will operate differently of course.
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Hard time turning on tv. I turn it on, green light flashes a few times then becomes solid green. No picture or sound. I turn it off and light becomes red. I do this at least 5 times before tv will come...

There are some capacitors on the main boardthat are low quality. You can buy a capacitor repair kit on Ebay that contains a set of capacitors to replace the offending ones - about 15-16 bucks. I soldered in the new capacitors and the TV has worked perfectly since.
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