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Old 04-10-2015, 12:32 PM   #1
Raflen
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Question LG 42PC3D Green Screen that corrects as TV “warms up”. Help Appreciated!

Hi all! I have a LG 42PC3d Plasma TV that has a green sparkly screen when it is first turned on. Over a 7 minute period, the picture slowly gets better until finally appears normal. Any suggestions as to what may be wrong or how to correct this would be greatly appreciated.
green screen.jpg

Thanks in advance!!

Last edited by Raflen; 04-10-2015 at 12:45 PM.. Reason: Added Photo
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Old 04-10-2015, 02:37 PM   #2
Alastair E
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Default Re: LG 42PC3D Green Screen that corrects as TV “warms up”. Help Appreciated!

Control-Board |Firmware needs updating to compensate for panel degradation.

What you are seeing is 'Mal-Discharge' or Green/Red spot syndrome, Very common on old LG like the V7, V8, X3 series....

Ive just done one today--The 42PX5D, much same 'X3' chassis....

Contact Capkid in USA--He has the specialised jig and the replacement firmware files--You'll have to send him your Control-Board for update.
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How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
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Last edited by Alastair E; 04-10-2015 at 02:39 PM..
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Old 04-10-2015, 08:17 PM   #3
Raflen
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Default Re: LG 42PC3D Green Screen that corrects as TV “warms up”. Help Appreciated!

Quote:
Originally Posted by Alastair E View Post
Control-Board |Firmware needs updating to compensate for panel degradation.

What you are seeing is 'Mal-Discharge' or Green/Red spot syndrome, Very common on old LG like the V7, V8, X3 series....

Ive just done one today--The 42PX5D, much same 'X3' chassis....

Contact Capkid in USA--He has the specialised jig and the replacement firmware files--You'll have to send him your Control-Board for update.
Thank you for the quick reply. I looked into this but Capkid's thread states that this doesn't work for TVs that get better when they warm up. See quote below.
http://www.badcaps.net/forum/showthread.php?t=29263

"PLEASE DO NOT PURCHASE THIS SERVICE IF ANY OF THE FOLLOWING ARE TRUE:
- You've attempted in any way to repair your control board or the control board is currently inoperable. This is NOT a repair service.
- The sparkling effect goes away after the TV warms up: You have a panel issue that cannot be corrected by reprogramming the control board."

Last edited by Raflen; 04-10-2015 at 09:10 PM.. Reason: Added Capkid quote
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Old 04-11-2015, 08:56 AM   #4
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Default Re: LG 42PC3D Green Screen that corrects as TV “warms up”. Help Appreciated!

Yeah, this is a tricky one. The mal-discharge I haven't been able to correct in several cases has been less severe than what you're seeing (normally, just minute pixel sparkles that fade as the TV warms). I would guess that flashing will correct this severe a case of mal-discharge, but I can't say with 100% certainty.

Last edited by capkid; 04-11-2015 at 09:13 AM..
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