Question about Samsung SyncMaster 740b 17" LCD Monitor

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Vertical green colour line appears on left part

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This is bad - that means there are loosed contacts between scaler board and flexi-cables, at least those where you have color lines. These cables are glued with anisotropic compound and not such easy to fix, to make it right you shall heat junctions to certain temperature and press the cable down to surface with certain pressure, which is specified for compound used in there - consider as unknown.
The easiest way to get rid of these lines is to press flexicables with something like piece of foam rubber.
Disconnect all cables coming from the display to boards, take the chassis off, uscrew metal cover from back side of display to get access to the scaler. Now, if you can, connect display back to boards (you may need to take boards off the chassis) and turn on the monitor. This will help you to find exactly loosed spot. Gently pressing to junctions of flixicable to scaler PCB with finger observe the behavior of color lines on the display. Then put there thin piece of foam and fix with metal cover. That will work for awhile.

Posted on Sep 10, 2009

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Hello.
I would have to see the vertical lines in order to ascertain the cause. Generally, however, they are from problems in the video processing circuitry surrounding the jungle chip. Also mention the indications of rfi correctly. So if you have another easily transportable tv in another room that you can bring in and set it side by side with the jvc, check it also for the same problem. RFI can be very deceiving.

Then let me know further. But don't service it if there is any chance of it being something external to the tv!
please feel free to give the problem in detail manner so that we can get a more clear picture of your question. as i can not see your TV pertionally so detail is all that will help both of Us
Regards Gizokieth

Posted on Sep 10, 2009

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Posted on Jan 02, 2017

SOURCE: SyncMaster 920n Monitor 1 1/2" greeen colour vertical bar

this discoloration problem occurs commonly in every1 s pc ... this problem occurs due to the nearby magnetic field emitting appliances just like speakers... so what u have to do is u must keep some gap with the speakers from the monitors & after that press menu button on ur monitor and give degauss.... this will solve your problem....

Posted on Feb 06, 2008

SOURCE: sky blue colour vertical line appear on the screen .

Hello,

What is the problem with your monitor? Please give details on the problem of your monitor, this will guide me to suggest a solution to the problem.

Take care.

Posted on Jul 17, 2010

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