Question about LG 42LC2D 42 in. LCD HDTV

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LG 42" TV simply will not switch on, have checked fuse on power supply but the problem appears to be the TV itself?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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dsacco86
  • 1077 Answers

SOURCE: 42 LG plasma no picture but sound. found internal

Sounds like it started "Protection Mode" because of a failed electronic part inside the TV. When this happens, the TV will keep turning itself OFF or will not turn ON at all. This keeps the other parts inside from being damaged. Most likely the TV has a power supply related problem. The common part to go bad for flat panel screens circuit board that powers the screen itself. Most manufactures call it a Backlight Inverter Board.
But, I can't say what is 100% the problem because I can't actually look at the tv over the internet. I can only make guesses with the symptom.

You have a few choices:

1. Best thing to do, 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, schematics, test points, and part# lists.Usually, cost under $20. Its the best repair guide material for fixing TVs. And most cases the new part cost less than $15 by searching on the internet with the part number.

2. 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.

Posted on Jul 21, 2009

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  • 1 Answer

SOURCE: LG 42PX4MVH PLASMA TV - Sound but no picture.

I have the same issue with my LG 42PC3DVA and I narrowed it down to the Y SUS board. After a little research there are a few items that are prone to go. The ceramic fuses (as you found), sometimes the capacitors on the Y SUS, Z SUS, and power supply go along with them You can tell because thy will be bulged at the top instead of flat. I replaced a few of my capacitors - they are only $0.89 each so it was MUCH cheaper than a board.

The other thing that is common on the Y SUS in particular are the FETs (also called MOSFET). They can be replaced if you are good with a soldering gun but they are static sensitive so be grounded. They are also a bit tricky to test so you may want to do some research on how to determine if this is the issue... or you can just replace the whole board.

Posted on Oct 28, 2009

nostechjb
  • 28 Answers

SOURCE: LG LCD flickers and turns itself off

I'm guessing here.. most probably its the ccfl tubes..

Posted on Nov 15, 2009

  • 458 Answers

SOURCE: TV will not power on

There is not an internal reset for this. You would need to check what voltages you are getting from the secondary side of the power supply, this would then indicate if the problem is with the main board not starting up the system or if the power supply has a fault. If you have a multimeter then you can carefully check for 24v 5v & 12v supplies. If you are not getting any voltages then the primary side of the power supply may be at fault. The first thing to check would be the fuse at the incoming mains supply on the power board, if this has blown then suspect one of the senmi-conductors & check to see if any of the capacitors are swoolen if so replace them.

Posted on Dec 08, 2009

  • 1 Answer

SOURCE: 42 in LG LCD TV turns off by itself

Found that TV started switching off by itself. Would try to come on..green light blinked for 2-3 seconds, tv came on (with picture and sound) for 1 or 2 seconds and then it would turn itself off. Found that the issue is with one channel only. If you are facing this issue....try quickly changing the channel the moment it comes on. You can do it either with remote or with the TV buttons directly. also in the same logic, if this is still happening, try changing the source to another (rgb-pc, av1, av2 etc). Basically change it from whatever input it is on currently, if changing the channels does not work. My symptom was that the tv made a loud 'TIK' 'TAK' sound which is louder than normal.

Posted on Mar 17, 2010

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1 Answer

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Several possibilities but most common seems to be power supply defect or poor connection. Check these resources. Note that other Youtubes that may address the problem are also accessible from the youtube link.
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Our LG TV will not power on. No light, no sound, nothing. How can we check the fuse on the power supply? Or could it be the power cord?


Hi Dfhamilton,
Damages due to lightening surge can go to any extent in a tv set. If you can, please open the back cover and check the fuse. Replace with the same rating one if you find it blown. Switch on the set. If it works, enjoy watching. If it blows again, please consult some TV tech.
Good Luck.

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Lecy blew tv wouldn't come back on change fuse in plug still no light on tv does 42" lg hd tv have a fuse internal.


Yes, TV's have an internal fuse on the power supply. All too often though more damage is caused besides a blown fuse or the fuse doesn't serve the purpose and the power supply is damaged. You can check and replace the fuse as necessary. If you need a replacement power supply, here is a list of vendors below. Have your TV model ready to help you find the part you need.

www.tristatemodule.com

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Could be an open internal fuse or power supply failure

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Try manually pressing the power/standby button on the tv (side or bottom) the red light should appear, most modern tv's will turn on simply by pressing the channel up or down on the tv itself.. But unfortunately in most cases, this seems to be an internal surge and needs a professional to inspect..

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hello, there's a possibility that the power supply has burn't out or a circuit board connected to the power supply

regardsshaun

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1 Answer

Tv does not turn on , there was a power outage and since then it wont turn on. there is power to the outlet


If the TV is completely DEAD. Check the main fuse in the power supply. Replace the fuse with exact amperage. Make sure you unplug the TV before taking the cover off. If the power supply keeps blowing the fuse, replace the power supply. Be very careful high voltage can kill!

Best of luck
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He may be right, LG is used to be called GOLD STAR, which makes junky electronic products, they changed the name to make it sounds better.
You may be able to get parts here: http://www.shopjimmy.com/catalogsearch/result/?q=LG+42LC2D+

Dec 15, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

LG 42" Plasma Faltron MT-42PZ91M


Try a power drain and if this doesn't work, it appears the power supply is defective or is not connected to the mainboard. If the connection was poor, simply moving it may have dislodged it and service would be required to reconnect it. Try the power drain first:


1. Unplug the product's power cable so that the device is not grounded to the house. Do not simply turn off the power-bar if one is in use.
2. Press and hold in the products power button for 1 minute to release the retained electricity from the capacitors and circuit board. 3. Plug the product back into the wall outlet rather than a power-bar to rule it out of contributing to the problem and turn the device back on.
Hope this works for you.

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