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LG 52SX4D DLP - Green Screen

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Old 07-19-2008, 10:49 AM   #1
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Default LG 52SX4D DLP - Green Screen

I have a LG 52SX4D and yesterday out of nowhere the picture is green. As much as I loved watching the Incredible Hulk in the 70's, I don't like to see the entire world and every show in green. I'm assuming that the color wheel isn't turning for it to be stuck in green. The TV was purchased back in 10/2005 and I've only had one issue with one of the side inputs and that was repaired while under warranty. The big issue is that NSI didn't choose to renew my warranty and failed to notify me of such. I'm going to raise a huge stink about this!
Okay, back to the issue. I've purchased the service manual in hopes of being able to see if the color wheel is not turning, possible dust build up, but I can't find where it is located. Can anyone offer up some good advice besides buring it, throwing it in the trash, or paying out the wazoo to have a tech fix it? I am technically savy and can fix many electronics, but I've never had to work on a DLP. Any help would be GREAT!
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Old 07-19-2008, 12:48 PM   #2
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First off I would contact LG because maybe it is a known issue and they might just repair it under warranty. It certainly wouldn't hurt...
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Old 07-19-2008, 07:46 PM   #3
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Welcome to the forum!

Is it possible that you are using component cables and the RED & Blue cables came lose?

If not that, then it might either be the color wheel (or motor for it) as you are thinking or it could be a PCB board on it that is defective as another possibility.

As was stated before, I would call LG and see what they can do for you.

Good luck!
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Old 08-01-2008, 08:38 AM   #4
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Thank you both for your replies! I'm running DVI cables and it's even green at the main menu, so I doubt that cables are involved. I've replaced the bulb and that didn't resolve the issue. Trying to actually get through to LG is a joke! I've been hung up on several times while on hold. I guess they figure since they are no longer in the DLP market they dump us into a black hole.
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Old 08-01-2008, 08:48 AM   #5
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Hey I actually got through, but only to find out that LG was unwiling to do anything but pass me on down the line. They will only say that "there is nothing that LG can do" but direct me to a service center.

Frustration level now at 6 (out of 10).
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Old 01-23-2010, 01:31 AM   #6
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Default Loss of Red color on LG 52SX4D

After numerous hours of searching the internet and purchasing a new color wheel I found the real problem. If you replace a color wheel or even the lamp you need to be able to get into the Service Menu. This is something that the repair technicians don't want you to know. With the tv that I have the original owner was told by a repair tech that it would cost about $800.00 to repair. After the tech left the problem was worse than before he got there. The original owner decided that it wasn't worth itand he would be better off just bying a new one. After getting into the Service Menu I found that the Contrast was cranked up to 115% and the color wheel setting were way ! way !! out of adjustment. This sounds to me like a repair person trying to make some fast money. I am posting this proceedure so that others will not have to go through what I and the original owner have gone through.

Instructions for resetting counter:
1. With the TV on, press and hold the MENU button on the TV front panel.
2. While holding that button, press and hold the MENU button on your remote.
3. Hold both buttons for ~5 seconds until the service menu comes up on the TV.
4. Release the remote MENU button first, then the TV MENU button.
5. Press and hold the ENTER (or OK) button on the TV front panel.
6. While holding that button, press and hold the MUTE button on the remote.
7. Hold both buttons until the Lamp Life Hours show up on your TV screen.
8. Release the MUTE button first, then the ENTER button on the TV front panel.
9. Make a note of the lamp hours if you want.
10. To reset the lamp hours, press the SELECT button (the one between the four arrow keys with two concentric circles on it) on your remote.
11. It will ask you to confirm the reset--press SELECT again to confirm.

To verify you've reset the hours, you can repeat steps 1-9 above and then just press the EXIT button on your remote.
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Old 10-06-2010, 02:32 PM   #7
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I'm looking at buying one of these TVs from someone for dirt cheap. It has the same green issue. I looked at the color wheel...it turns correctly and appears undamaged. I also went through the lamp hours reset procedure in the previous post...it didn't correct the problem. I verified that the lamp hours were indeed reset.

I found that contrast was cranked up to 150...I played with it, all the way down to 50, but it didn't make a difference.

Same image conditions from all inputs...lack of red.

Previous owner says that this happened gradually after replacing the bulb.

Any other ideas for what this could be?
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