20 Most Recent LG 42LV4400 42 in. HDTV Questions & Answers

It could be the main or power board, either would cause your issue

LG 42LV4400 42... | Answered on Mar 01, 2018

The Tcon Board or the LCD panel is faulty
If you wish to get some details; check the site linked here. Pull up older posts.

LG 42LV4400 42... | Answered on May 05, 2016

Set is on then, are you using a box of any sort for signal? If so unplug the set and it for several minutes and power back--a box can do this.

LG 42LV4400 42... | Answered on May 03, 2016

Fault with the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

LG 42LV4400 42... | Answered on Jul 14, 2015

Check and replace damaged component/s at its main power regulator board, or replace this board as card bassis. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/
Pull up previous posts by its left sidebar, or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

LG 42LV4400 42... | Answered on Oct 04, 2013

First verify that you have the set is plugged into a working outlet. If your outlet is fine, then you are either dealing with a power supply or main board failure. You will need to have the set properly diagnosed to be sure.

LG 42LV4400 42... | Answered on Sep 03, 2012

Check for loose contacts in power outlet. Switch off TV, switch off power, remove plug and wait for 48 hours and retry.
If problem persists, I suggest it is better to refer it to a qualified service
technician, since the back cover has to be opened for investigation/rectification.

LG 42LV4400 42... | Answered on Aug 23, 2012

Consider having a shop look at it--one who does authorized warranty work.

You might also call LG to see what if any known issues for this model are.

LG 42LV4400 42... | Answered on May 17, 2012

I see so many here with no sound/nopicture issues:


1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.4_26_2012_3_07_19_pm.jpg

LG 42LV4400 42... | Answered on Apr 26, 2012

If you know how to access the region code, then I suggest you give it the code for "0" then you will not need to change it again. It should play back all.

LG Televison &... | Answered Yesterday

necesito programar un control rca a un dvd speler spdv107

LG Televison &... | Answered Yesterday

check input connections make sure going to in and check input or source

LG Televison &... | Answered 3 days ago

Make certain that your WIFI settings have not changed. Had same problem once, re-entered WIFI information and it worked.

LG Televison &... | Answered on Jan 14, 2020

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