Question about Samsung HCN4226W 42" Rear Projection HDTV-Ready Television

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Black Lines I have noticed that my 42"Samsung HD TV has black lines in the background of the picture. It happens on and off, sometimes more or just near the top. Any help would be great. Thanks!

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Re: Black Lines

Yea my 50 inch hdtv is the same. i contacted the samsung number since its still under warranty and they said i need a new engine or something for my tv that they would come out next week to fix it. i guess it happens alot. but they said once itf fixed it probably wont happen again. so u should call them

Posted on Sep 05, 2007

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I have a Samsung HL-N4647W 42 inch HDTV DLP TV and the screen is blurry and out of focus with a black curved block across the bottom. what can I do to fix it?

The tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignments,have colors shadow pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Dec 03, 2010 | Samsung HL-R4264W 42" DLP HDTV

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Thin horizontal black lines

It looks like either failing convergence IC chips or a couple busted capacitors around them. This will need to be given for servicing.
You could try a hard reset first though: Unplug the TV from the power socket, remove all cabling, wait 5 minutes and replug to wall socket and redo cabling.

However, I think that you could have either convergence problems or a failing power board, for which you will need to get the set serviced.

Hope that helps!

May 25, 2008 | Samsung HLN5065W 50" Rear Projection...

1 Answer

I have a Sony, 54" Projection Screen HDTV that I bought in 2002. I believe it is a 1080i. When I am waatching TV, I notice that when the screen is mostly black, for instance a night scene, the black areas...

Confirm the actual model number as the one indicated in the title is not HD.

Some of these sets had bad picture tubes that on a black screen or blank video input may in your case show faint curved lines and or some color (red,green or blue) present in the background.

If this is the case there is a fairly simple way to attempt to adjust something for this--not in the customer menu but fairly easy to get at and try.

Most of these sets were KP51ws500, 57500 etc.


May 11, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Very fine blue lines veiwable when the background has black in it

You need to adjust (actually bit decrease) G2 volts (calls Screen volts) of Blue gun.
If you are familiar with big TV repair and have electronics knowledge then let me know to guide you further.
thank you.

Dec 13, 2008 | Sony KP-51WS500 51" Rear Projection...

2 Answers

Many thin black horizontal lines on my Hitachi Ultravision 50" TV

Good Day, LDS also;
You may have a poor seated cable connector. Unplug TV from A/C, remove back look for a large black connector. It connects between the Main Digital Module and the Drive PWB. Re-insert both ends several times to make better contact, use contact cleaner if have but not always needed. Good Luck, big IRISH.

Jul 21, 2008 | Hitachi UltraVision CineForm 55VG825 55"...

1 Answer

Lcd tv

/if it is White lines , LCD Broken . If it is in background somebody have left it on with picture burn in the screen . Not Repairable..


Mar 30, 2008 | Projection Televisions

3 Answers

Samsung 42 HCN4226wx

i think you got a bad board, ask for an exchange.

Jan 21, 2008 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Vertical Lines / Color Differences at edge of Analog vs HD Picture


Oct 31, 2007 | Mitsubishi WS-55819 55" Rear Projection...

2 Answers

Annoying diagnol lines in background

Sorry to tell you gus, if you paid 500 bucks for convergence IC's you got #### and didnt get kissed. A repair like this should not go much over 250 to 300 bucks.

Sep 29, 2006 | Samsung HCM4216W 42" Rear Projection...

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