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Group of Red Spots randomly appear on screen LG 42PQ60

Discuss Group of Red Spots randomly appear on screen LG 42PQ60 at the Television within the HiFiVision.com - Audio Video Hi-Fi Forum; Dear Friends, Exactly and year later (had picked up my LG 42PQ60 last year), the ...

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Old 7th November 2010, 09:51 PM
 
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Unhappy Group of Red Spots randomly appear on screen LG 42PQ60


Dear Friends,

Exactly and year later (had picked up my LG 42PQ60 last year), the moment warranty got over I noticed some red spots (its like someone is pointing a red source of light on a section of screen) randomly appear in darker zones of a picture. This is easily re-producable if I use a HD source with some dark scenes. The current image setting has Contrast up at 92, Brightness 50. The issue while watching SD content on Tata SKY+ is very rare but have seen it multiple times while watching 720P content on WDTV.

Anyone else who has also faced this issue?
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Old 8th November 2010, 12:10 PM
 
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Re: Group of Red Spots randomly appear on screen LG 42PQ60

Quick update - I ran the ISM - color wash for around 20 mins and the occurrence of the dancing red spots (found them to be flickering on a closer inspection) was noticeably reduced.

The issue however was present on all input modes - irrespective if there is a source connected. I was able to see a large section of red dancing dots on white sections as and when Q Menu was launched.

Anyone else with similar symptoms?
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Old 8th November 2010, 10:18 PM
 
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Re: Group of Red Spots randomly appear on screen LG 42PQ60

Any one facing a similar issue or any idea of the possible solution?
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Old 8th November 2010, 11:15 PM
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Did you try anti-pimple cream?

Let me know if you need a recommendation on that one

Cheers
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Old 9th November 2010, 06:02 AM
 
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Re: Group of Red Spots randomly appear on screen LG 42PQ60

try pressing it with your thumb till the red spot gets removed and for all lcd/plasma tv get a strip surger thing,ground your home properly ,if you are using wire extenders make sure you get the 3 pin one and also when not using remove the power cable from the socket and also try to invest in an stabilizer/ups.
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Old 9th November 2010, 10:23 AM
 
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Cool Re: Group of Red Spots randomly appear on screen LG 42PQ60

Quote:
Originally Posted by gobble View Post
Did you try anti-pimple cream?

Let me know if you need a recommendation on that one

Cheers
Thanks Gobble,

Tried the local store today - could not find a pimple cream that keeps on jumping, attached to these dancing red pimples (read pixels).

Will help if you can mail me one from Bangalore as a Diwali gift
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Old 9th November 2010, 10:25 AM
 
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Re: Group of Red Spots randomly appear on screen LG 42PQ60

Quote:
Originally Posted by jerry53 View Post
try pressing it with your thumb till the red spot gets removed and for all lcd/plasma tv get a strip surger thing,ground your home properly ,if you are using wire extenders make sure you get the 3 pin one and also when not using remove the power cable from the socket and also try to invest in an stabilizer/ups.
Thanks Jerry,

The PQ60 has a glass overlay so pressing on the screen will not help. The issue is not stagnant red pixels but these flicker while watching some content.

I will try and pick up a UPS because the area I am staying in has lots of power outages.
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Old 9th November 2010, 10:33 AM
 
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Re: Group of Red Spots randomly appear on screen LG 42PQ60

I had this red dot flicker problem in dark scenes more than an year ago. I replaced the cheapie HDMI cable with a quality cable and problem disappeared.
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Old 9th November 2010, 11:13 AM
 
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Re: Group of Red Spots randomly appear on screen LG 42PQ60

Quote:
Originally Posted by rshri View Post
I had this red dot flicker problem in dark scenes more than an year ago. I replaced the cheapie HDMI cable with a quality cable and problem disappeared.
Rshri, I am having this problem with component and AV sources as well. So not sure if HDMI cable is causing it. Will anyways try changing the cable and playing the content again to see if there is any variation in intensity of these red dots.
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Old 9th November 2010, 09:42 PM
 
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Re: Group of Red Spots randomly appear on screen LG 42PQ60

Just updating the status for those who may have faced similar issues with Plasmas.

Found plenty of links with information on LG Plasma panels having issues with red dot flickering (but none of them with recent models!) All the posts on AVSForum and other websites were of models sold in 2006-2008. I bought mine in 2009.

The problem of red dot flicker was quite common with LG Plasma panels then (various posts indicated majority of manufacturers were using LG Panels) and this issue was resolved with various techniques -
- Adjusting some voltage parameters (which leads to faster degradation of the panel) using some va, vs or vy and vsc adjusting knobs.
- Replacing the controller board, Z Sustain board and Y Sustain board
- Replacing the complete panel.

Had filed a complaint with LG and their technician called me today, he sounded pretty familiar with the problem and has asked me to run whitewash for the night, if that does not solves it the problem may be with the panel (he stated that some panels do have these issues but issue it self surfaces during the warranty period). I am required to revert if whitewash or colorwash has been of help. If not he may even try voltage adjustments (which others facing the problem said - further aggravates the problem whenever it hits back in a time frame of 8-10 months).

Whatever happens will keep you guys posted.

How I wish that a pimple cream could have solved it


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