Question about Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

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Diagonal lines on a Samsung 46" TV - Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

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Picture is ok /converg.-ok/;diagonal lines on screen; looks like waves.Appear on tv and video modes.I observed same problem on some another tv in my practic,but this case is worse.

Posted on Sep 29, 2008

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Posted on Jan 02, 2017

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Hi,I have a 46"Samsung Led TV,If i use the tv for 1-2 days i wil get some verticle lines in Center, Left&Right Side of TV. If i stop for 1-2 days thr wil be no line for 1-2days and again it wil starts


Sounds like T'Con board fault. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent. Line faults to all LCD screen are similar, irrespective of its brand and screen size.
Search the site by type in the "Line fault" in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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Does Samsung tcon board fit Toshiba TV?


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Hi. I have a 46" Samsung LCD (LN4661) and


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The picture on my tv (mit. 1080) is made up of


Convergence ICs Two of them STK392-570 ,they are big black ICs,Replace with same Number on ICs.You can order them at MATS 1-800-628-1118.

Aug 07, 2009 | Mitsubishi WT-46805 46" Rear Projection...

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Diagonal lines through the picture.


I've found the lines caused by the digital board before. Unfortunately it is expensive. I'd recommend running it on HD and it will bypass the faulty circuit. The lamp light flashes telling you the lamp is firing up. As the lamp ages, it will take longer and longer until it fails.

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Thin Yellow Vertical Line - Samsung LNT4665F LCD TV


Unplug for 30 seconds from it's power source and then try it again. If that doesn't work, call Samsung for further troubleshooting and have your model number and serial number handy. Please be prepared to tell them how long the line is.

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Nov 15, 2007 | Samsung HLP4663W 46" Rear Projection HDTV

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Diagonal lines on my screen(samsung 55" projection HDTV hcn553w)


Here's the link to the user manual; http://org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=us&CttFileID=32370&CDCttType=UM&ModelType=C&ModelName=HCN553W&VPath=UM/200310/20031002105141187_P55A_00054A_0410.pdf Check page 28 and 29 for convergence instructions. Give it a try to see if it makes any difference. Check page 27 for the "perfect focus" feature and see if that helps. Could you take a photo of the "diagonal lines" on the set and post it - might help? If you open a menu on the screen, does it also have the lines across, or is it clear as normal. Check page 64 for how to run the demo, and try that. Have you recently unplugged the set from the mains power supply, left it for at least 15 minutes (preferably two hours) then turned it back on? if not, try it and see if you get any change. Check page 38 for the usual video settings - play around with them and see if any significant change? Check page 39 and set the "automatic picture setting" to standard, if it isn't already, and something else if it is - see if you get a change. Check page 40 for the colour tone adjustment - probably won't change anything, but worth a play in case. Check the bottom of page 46 about channel fine tuning - reset at least a couple of channels to 00, see if that makes a difference (long shot). Does the screen itself need cleaning? recommended is just a clean dry cloth - basically have a good close look at the screen when it is both on and off, to see if there are any marks that might be causing the problem - in particular has it possibly been cleaned with a solvent or too aggressively cleaned in a diagonal direction? shine a light on it at a few angles to check, and look from a few different angles too. Check by moving or turning them on and off if any other electric or electronic items near your tv may be causing the effect - speakers perhaps. Move speakers to check. A way to check other items is to totally cut off the electric supply to the whole house for a couple of minutes, except one circuit into which you can plug the TV and a picture source. See if you get a perfect picture - if so, start switching circuits back on 1 by one until it changes. Hope this helps - I think a photo would help a lot :)

Jul 16, 2007 | Samsung HCN553W 55" Rear Projection...

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