Question about LG DU-52SZ61D TV

1 Answer

LG DU-52SZ61D you gave advice on

I'm new to this site so i hope I'm doing this properly. I posted a response to what you wrote yesterday, and it showed up as a comment. Now I noticed the ask me button. I apologize if this is not how I should do this.

Anyway, after checking the things you suggested yesterday, I can stand by the guesses I made in my comment. The color wheel is fine, the light is probably bright enough, but even if it wasn't wouldn't account for the brighter strip on the right side I imagine.

I looked further into the chassis of the set last night and I have to say whoever worked on this set was either lazy, incompetent, or both. Every screw holding the cassis down and the power supply board to the chassis was gone except for one - a large headed, small shafted bolt holding the chassis to the base of the case. It appears there should be at least one more of these large bolts, in addition to several coarse thread screws holding the various sub components together. Still, the various components were in the right place, as there are dowel pins and guide that ensure correct alignment. These were the only things keeping the guts from flopping around the set.

This leads me even further to believe the problem is some sort of obstruction or misalignment in the optical path. I suspect when the light engine originally went bad, it was not repaired under warranty by a technician as the previous owner claimed, but rather he tried todo it himself and badly botched the job. He said it worked fine after, until it was bumped, but it's entirely possible it never worked right after the "repair". At least it seems he got the engine installed right electrically, since the set does work and has the visible but dim picture as stated.
I plan to pull the chassis out, look for problems then replace it correctly with new screws. I need a service manual to reliably do this however. has a downloadable manual for the RU-52SZ61D for $15.99. From what I've read the only difference between that and the DU set I have is mine has the HD tuner and cable card slot. Hopefully everything else will be the same, especially the exploded view diagram and parts list if needed. Unless of course you might know where I can get the manual specific to my set?

Do you have any tips or other information for me before I start? i really appreciate your help so far. I'm really hoping to fix this set myself as I've had several unexpected expenses lately and money is rather tight for the time being.

Thanks again, very much!

BTW, if you need to contact me directly, you may do so at Obviously remove the nospam part.

Posted by on

  • onsitecomps Jul 24, 2008

    Darn, just noticed it placed this as a new request. I'm sorry about that. i don't see any way to delete it or move it, but I imagine you'll know which posting i was referring to Shuttl.

    If the mods want to move/remove this, I understand.





1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,139 Answers

Hello onsitecomps,

I was working on a projection TV the other day and I am wondering if this set has filter mirrors? Filter mirrors are mirrors that filter out all colors but one and the use the combination of the colors to produce a luminance light( white light ) which is projected along with the RGB lights. This might be the problem that is occurring here if the mirror that reflects the luminance light is damaged it would still show the color picture but without luminance. This is just a thought that hit me. I'll post this to the other posting also.

I hope this is of help to you,

Thank you,


Posted on Jul 25, 2008


1 Suggested Answer

  • 2 Answers

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

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Need power supply for du-37lz30 whair can i gat one

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.

Nov 15, 2015 | LG DU-37LZ30 37 in. LCD HDTV

1 Answer

I want to ic la7840 circuit diagram

May 10, 2014 | LG DU-52SZ61D TV

1 Answer

Beckman DU 530 spectrophotometer has monochromator error code

He's not talking about a washing machine. It's a laboratory spectrophotometer posted in the wrong section.You'll have to send it for diagnosis and repairs. Our lab's 520 gave the same error. Estimated repair: $2-5000.

Feb 26, 2013 | Washing Machines

2 Answers

My GSA 2166D does not recognize dvds when I insert into drive, it will recognize and burn to cds is this a lens or driver issue? The program that I go though tells me that there in not a disk. I tried a...

Hi As your drive is burning cds but wont burn dvds, I suggest your try other brands of dvds and a different burning program.I use Ashampoo Burning Studio 6 FREE, which you can down load free from the web.Hope this helps you.
Regards Bill

May 15, 2010 | LG GSA-2166D DVD RW Dual Layer Burner

1 Answer

DU 50PX10 Need help checking volages on boards

There is one site call
The service manual you need is $11.99
This will show you all the test point and values. Plus, part numbers

I hope I answered your question. Please rate me. :)

Mar 08, 2009 | LG DU-50PX10 50 in. Plasma HDTV

1 Answer

Need STR number for LG DU-37LZ55 TV

If you wish to get some details; visit the site linked here. Pull up older posts. Circuit diagrams of SMPS section of many popular brand devices are given. Search the site by type in the "brand name" of your device, in the "Search box at the top right of the Homepage" to get gathered related posts. Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Sep 15, 2017 | LG DU-37LZ30 37 in. LCD HDTV

1 Answer

62" LG Rear Proj DLP TV color wheel replacement

I just had to replace the color wheel chassis which ran $700.

Dec 29, 2008 | LG DU-52SZ61D TV

3 Answers

Red Stripe, right side

I have the same problem but mine is 3 years old? Im taking mine to the shop on tuesday to have it looked at .... this sucks!!!

May 01, 2008 | LG DU-42PY10 42 in. Plasma HDTV

Not finding what you are looking for?
LG DU-52SZ61D TV Logo

253 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Televison & Video Experts

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

75311 Answers

Are you a LG Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides