20 Most Recent LG RU-44SZ51D 44" Rear Projection HDTV-Ready Television Questions & Answers

I just bought a used 60 inch rear projection tv. The picture is fine except I have a crackling sound coming from the front of the tv also. What's the deal?

LG RU-44SZ51D... | Answered on Dec 03, 2017

put the cd on top of the projection tv and spin it around until the hdtv comes on

LG RU-44SZ51D... | Answered on Jul 30, 2015

Could be the plug where you disconnected your laptop ; Try plugging it in and out several times. Sometimes that fixes the problem.

LG RU-44SZ51D... | Answered on May 18, 2015

The lamp ballast boar of your LG projection Tv is faulty. There is coils, which generate high voltage for the lamp to work. If any one turn of winding inside that inverter transformer gets shorted, it will apply a heavy load to the main power regulator board, and a "Hissing" sound will be prodced. Just replace the ballast board.

This is the picture of the lamp ballast board of your tV. Just look it for anu bulged capcitors. You can see the inverter transofrmer also, and near to it is an electrolytic capacitor. Just look it for any bulging on its top side. I hereby attaches an other picture too, not related with your tV, but for your information, about what a bulged capacitor will look like.

See the red arrow marked capacitors. They are bulged ones. You can see a good one at the top right part of the board with flat top surface. If the capacitor in the inverter board has damaged, the fault you indicates will occur. So check it before replacing the ballast board. OK.

LG RU-44SZ51D... | Answered on Sep 12, 2011

44 inch lg dlp hdtv no picture or sound press power button standby light turns yellow and then back to red

LG RU-44SZ51D... | Answered on Sep 08, 2011

Hi there, I am not familiar with this tv in particular but I would start by looking around the back of the set for a cooling fan and check that the airway is clear, it sounds like an overheating problem.

Hope this helps.

LG RU-44SZ51D... | Answered on May 09, 2011

It could be the crt cooling fluid in the tubes. Over time they can become cloudy and discolored, making your picture appear different looking than originally.

LG RU-44SZ51D... | Answered on Mar 23, 2011


Life span of no TV can be predicted. It can be according with its usage time and so many other things. I know a Sony 19" tv working perfectly since 1981. Some sets' life will be short, while the others will last long. Normally, a TV, which is used at high brightness all the time, like open bus stations and hotels etc will not last longer. Its picture tubes' emission will go out in no time. OK.

LG RU-44SZ51D... | Answered on Feb 09, 2011

push the MUTE button on your remote control at the same time as pushing the OKbutton on your tv set . Hold for at least 10 - 15 seconds . You should now see a page on your screen that will tell u total lamp hours

LG RU-44SZ51D... | Answered on Jan 05, 2011

you need to replace the lamp to correct this issue

LG RU-44SZ51D... | Answered on Dec 19, 2010

the problem on ur tv is the lamp ,

LG RU-44SZ51D... | Answered on Dec 02, 2010

Sounds like the color wheel or fan is causing the squealing and shutdown. Color wheel is the most likely of the two.

LG RU-44SZ51D... | Answered on Aug 20, 2010

This is normally caused by cable/antenna connections

  • Unplug all cables from TV and receiver
  • Plug them back in.
  • Check antenna location and the direction
  • Try another cable for TV connection to receiver.

LG RU-44SZ51D... | Answered on Jun 14, 2010

most of these have bad power supplies..
does it flash any errors or just kick off?
if you dont get an error code, suspect the power board..
if i remember correctly, its a capacitor thats hidden down between the heatsinks, kind of hard to find and it doesn't bulge like a lot of other caps.
let me know if you need further assistance.

LG RU-44SZ51D... | Answered on Jun 14, 2010

Problem is either you need to replace Lamp or your Lamp Fan is defective. For Lamp Call Mats 1-800-68-1118

LG RU-44SZ51D... | Answered on May 13, 2010

Locate and remove the lamp which should be behind a removable door on the right side as you look from the front of the set.

If it is shattered you have found your problem; if it looks undamaged you have either a possible bad ballast which powers it or a power problem.

This model can be difficult to work on as there are at least 3 different versions which use different circuit boards.

Let me know what you find as I am here to help.


LG RU-44SZ51D... | Answered on May 13, 2010

Call Mats Electronics 1-800-628-1118

LG RU-44SZ51D... | Answered on Feb 12, 2010

Test,play a DVD movie,see if u have that shadow,If yes,than ur Tuner signal board have problem,must change it.Not than it ur comming in signal have problems,Call ur cable or satalite provider to check the signal.

LG RU-44SZ51D... | Answered on Feb 08, 2010

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