Comments on: Samsung LCD TV LA40A650A1F Ghosting Repair

By: Paul

Paul — Sat, 29 Dec 2018 05:03:50 +0000

Hi Mark, thanks for the tip on ghost image. I did what you said and used a thick rubber tape unstead of tyre rubber.
The tv now is working fine. Just finished. I’m gong to keep testing it. Only comment on your article is that (me been a novice with lcd tv) you should have mentioned that it is necessary to remove the front plastic frame and inner metal frame to access the flex cable. Anyway, thank you very much again and cheer up. Paul.

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By: Dhirsing vasave

Dhirsing vasave — Tue, 23 Jan 2018 19:43:07 +0000

Hello sir I have ua55c7000 vertically lines on osd if reduce back lights it clears only lines on osd otherwise full screen distortion pliz help me I am from india.

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By: Tyrone

Tyrone — Thu, 16 Feb 2017 13:05:11 +0000

Excellent repair Mark,I recently had a Samsung Lcd with lines at the top of the
screen and while replacing the metal frame which is around the screen which carries 8 screws I damaged it therefore great care is paramount.

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By: Mark

Mark — Mon, 26 Dec 2016 07:51:41 +0000

In reply to Hermann.

Hey Hermann,
Thanks for your comment. I may have got a little confused by my statement. The method suggested in Kent Liew's LCD Repair Tips V3 states that if the menu shows a good display, but the background is distorted, the mainboard is at fault, but if the menu as well as the background is effected, the problem will probably lie in the LVDS cable, FPC cable, T-Con board or LCD screen. I found the fault by the 'wiggle method'.
Thanks for helping me to clarify the explanation.
Cheers
Mark

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By: Hermann

Hermann — Thu, 22 Dec 2016 18:21:00 +0000

Hi,

I don't understand the rationale behind the rule that if the menu is not affected by the ghosting, it is a defect TCON. The menus are produced by the main board like all other image signals, I suppose. How would the TCON be able to discriminate between a menu and other signals?

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By: Samir Mulla

Samir Mulla — Mon, 19 Dec 2016 09:22:59 +0000

Excellent job sir

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By: Mark

Mark — Sat, 17 Dec 2016 02:21:31 +0000

In reply to Lee.

Hey Lee,

I would like to look at that link, but I don't think you left it with your comment.

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By: mahmoud_tajpour

mahmoud_tajpour — Thu, 15 Dec 2016 19:49:03 +0000

Thanks Mark this fault and repaired by you very useful for me.I must say you ci am living in a little town in east of IRAN.congratulate Mr.Mark.

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By: Yogesh Panchal

Yogesh Panchal — Thu, 15 Dec 2016 16:43:48 +0000

Well done! Mark,

Good idea but with little precaution; because more pressure will damage the screen. once i have damaged one accidentally while handling the screen for the similar fault .

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By: Robert Calk

Robert Calk — Thu, 15 Dec 2016 09:53:18 +0000

Good job, Mark. You gave the TV a reprieve.

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