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Question

Samsung HLN4226W DLP issue

by larryccf / March 18, 2013 10:32 AM PDT

Grateful for any assist on this - issue is with a Samsung HCN4226W (Svc model HCN4226WX/XAA 3CEW700188X)

we just had our Samsung 61" DLP go out and using the web, believe I have found the solution (digital board). While it'ss down I pulled our samsung HCN4226W 42" dlp TV out of the guest bedroom to use - have had it since new, used one time when it was set up in 2003, and never again since .

Hooked it up to the family media center last nite and it worked fine for about 2 hours then I noticed first, red stripes on peoples faces just under the eyes, similar to NFL football players putting black under their eyes. Then while I was going thru the color adjust settings to see if I could correct that, the picture started to climb vertically so there was at first a 4" black bar at the bottom while the top of the picture disappeared above the upper edge of the screen. That 4" bar grew to a 6-7" black bar.

Then the bottom edge of the displayed picture developed a rolling curve and that same distortion crept up into the picture itself and then the screen has gone all black. And now if we try to turn it on, all we get is a 3 tone beep sequence that keeps repeating every 30 - 60 seconds and to stop that i have to turn it off at the surge protector strip.

What could go bad on a tv kept in an air conditioned environment - only other input I can think to offer is that as it had it's own wheels under the stand, we rolled it on a carpeted floor from the guest BR to the family room - could the vibrations moving it have upset something?

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All Answers

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Answer
Took a look and it looks to be a 2003 model.
by R. Proffitt Forum moderator / March 18, 2013 11:12 AM PDT

I went to samsungparts.com to see if there is a service manual and parts. There is so my guess is that service is possible on this 42 inch model.

But I'd get an estimate and compare the repair price to the replacement costs.

OK, let's talk a little about how these were made back then. There were some models where parts were glued into place and at 10 years it could be brittle and just a little jostle and parts can move around. Your technician will have to get inside but I'd remove this from service to avoid more damage.
Bob

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thanks
by larryccf / March 18, 2013 11:21 AM PDT

appreciate the response - didn't know they glued parts in place and they certainly could have suffered from age embrittlement and the rolling it into the family room jostled parts loose. But i don't understand why it would work fine for a couple of hours and then start to fail unless heat buildup caused components to expand and separate or move where the glue had failed.

i started to think about it a little more after i posted - i've got some experience with plastics, just enough to get myself in trouble, but i know some plastics shrink with age (as well as embrittle). That shrinkage with glue embrittlement + some heat thrown in the mix could be the culprit.

i guess i'll have to pull the back cover off to see what's going on - i know the picture shifting was probably the dlp mirror chip shifting (i learned that from watching one of the youtube vids on how to adjust picture screen location

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If you are a TV repair person.
by R. Proffitt Forum moderator / March 18, 2013 11:48 AM PDT
In reply to: thanks

I'd want that service manual at www.samsungparts.com.

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appreciate but
by larryccf / March 18, 2013 2:40 PM PDT

no i'm not a tv repair person - just frustrated that a tv i spent $1500 on 10 yrs ago craps out after a few hours of viewing - yeah i know it's 10 yrs old but. RIght now with the economy where it is, and we're helping a couple of the kids who've had their incomes cut survive, so i figured if there was a simple "go to" this fix, i'd try it.

Electronically, i'm a fred flintstone, barely literate but mechanically i can find my way around. On the 61" DLP, there were quite a few videos on youtube from professional shops no less, so those were a big assist, and made it easier to jump into fixing it.

I will keep the suggestion in mind though

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I looked at the price of the manual.
by R. Proffitt Forum moderator / March 19, 2013 3:35 AM PDT
In reply to: appreciate but

I see the download is under 20 bucks. My bet is a lot of the mechanical stuff is in there.

-> I hear you about DLP in general but find that shop repair is exceeding the price of a new 40'ish screen.

I don't mind discussing the industry as I'm a designer and now consultant on many devices. In this case I think I'd want that service manual since I'd need that to know which part to remove first as well as where each goes.
Bob

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