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ribowman
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HLS4266W Horizontal lines

Post by ribowman » Sat Aug 14, 2010 9:57 am

This was initially mistakenly posted in the projector forum. We have a Samsung HLS4266W about 4 years old. About 6 months ago we began to see thin horizontal black lines, about 4 of them. The issue has gotten progressively worse to the point that we now have many thicker horizontal lines that seem to change from a good picture to almost no picture, sort of like the horizontal hold on older tvs. Any help would be greatly appreciated.

Rick Bowman
Ball Ground, GA

darkart77
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Re: HLS4266W Horizontal lines

Post by darkart77 » Mon Aug 16, 2010 3:06 pm

The lines are a common and frequent sign of the DMD board. Place an advanced search to see other people's solution and problems. Just enter as key word vertical lines.

ribowman
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Re: HLS4266W Horizontal lines

Post by ribowman » Tue Aug 17, 2010 12:28 am

Thank you. Based on other posts it sounds like the DMD board. However, another responder wrote that Samsung changed DMD's in October 2006. The TV I have was purchased in November 2006. Should I find a p/n on the existing board to verify the correct p/n or can I assume the model # will reflect the right part to be ordered?

Again, thank you for any help.

Rick Bowman
Ball Ground, GA

cdwatters
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Re: HLS4266W Horizontal lines

Post by cdwatters » Tue Aug 17, 2010 1:26 am

Depending on the vendor you are working with. I'd recommend taking a very clear digital photo of the front and back of the DMD and emailing it.

darkart77
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Re: HLS4266W Horizontal lines

Post by darkart77 » Tue Aug 17, 2010 2:56 pm

Totally agree with ribowman

ribowman
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Re: HLS4266W Horizontal lines

Post by ribowman » Sat Aug 21, 2010 12:13 pm

Update - cart before the horse moment. I started to remove the back of the tv to photo the DMD board and on a whim decided to test the screen with a DVD movie.

The DVD movie plays perfectly with no lines or horizontal distortion.

Do I still need to look at the DMD? Is the signal process different via a DVD player?

Help!

Rick Bowman
Ball Ground, Georgia

darkart77
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Re: HLS4266W Horizontal lines

Post by darkart77 » Mon Aug 23, 2010 3:04 pm

hmmm :cry: very strange. Yes, the DVD uses a different signal like you put it. Tell me has anything in the environment changed? like a micro wave, bug antennas, anything out of the ordinary that may be affecting the reception on your set.
WHEN DID THIS START OCCURRING?

ribowman
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Re: HLS4266W Horizontal lines

Post by ribowman » Sat Aug 28, 2010 10:20 am

No environmental changes that I am aware of. We have not made any modifications or added any appliances. Since we live in the middle of 80 acres I doubt there are any outside forces at work. We have another TV on the same system with a separate cable box that works fine The boxes have been swapped just to rule that out, no change.

As to a point in time when it started we're not exactly sure. It has been gradually getting worse over a period of weeks.

RIck Bowman
Ball Ground, GA.

darkart77
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Re: HLS4266W Horizontal lines

Post by darkart77 » Tue Aug 31, 2010 11:58 pm

You know? Im thinking the DMD board, truly the only thing that can produce the symptoms your tv is having.

alex0101
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Re: HLS4266W Horizontal lines

Post by alex0101 » Thu Sep 09, 2010 1:26 am

does your DLP has an HDMI or DVI input? connect something to it and see if you still see horizontal lines. If you don't see the lines with DVI/HDMI input, then your DMD board is good

Another test is , with no input signal, press the menu or input selector of the tv If you see the menu or input selector display good, then your DMD board is good

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