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Discussion Starter · #1 ·
Ok I like to start off by saying I am new to this forum cause I was told to ask my quesion on this forum as many experts are members of this forum. I also like to add that samsung DLP Tvs are the most junkie worthless disposable tv's I have ever seen! Are all DLP tv's bad? NO! Mitsubish DLP sets are awesome and as long as mitsubishi makes DLP sets that is all I will buy, Now then, I have 4 DLP tv's 2 samsung 2 mitsubishi. I have had nothing but problems with both samsungs. I have been able to easily fix my one samsung but this one is driving me nuts, Its a samsung model hlp4663wx and I have installed a new ballast, bulb already. I checked the saftey switch, I check to make sure the color wheel spins which it does. Here is what happens, I turn the set on the bulb will light for about 5 seconds then it will shut off and I will get nothing but blinking lights on the front of the set. Every once in a blue moon this tv may run for a whole 15 minutes with a perfect picture then all of a sudden the picture wil freeze turn all white and then go black and the bulb will go out. Ok, I am becoming disgusted with trying to find out what is happening here. PLEASE HELP! And this is a big forum so if I posted in the wrong thread sorry.


To add if the color wheel spins but not fast enough due to it going bad would that make the bulb not want to stay on? I only ask cause a few times when the bulb stayed on longer than 5 seconds I could here a fan like noise spinning at a high rate of speed. I do know the color wheel does spin as I can take a flash light and see it spinning threw the window.
 

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You need a service tech. Nuff said.

Seriously though you should have a trained tech have a look see. How old are your TVs and how much do you use them. If still under warranty call up Samsung or your dealer.

Good Luck.


Best Regards

KvE


PS Generally Samsung DLPs are good TVs, I've sold them for several years and few if any complaints, what are the conditions in your home. Do you have your TVs on surge protectors? Separate ones? How is the wiring in your home and where you live have a good power grid?


Biggest problem most folks have with Samsungs DLPS, especially the 61" LED is geometry issues.
 

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Discussion Starter · #4 ·
Nope no warranty and I am pretty good with electronics. I forgot to add I here a almost what sounds like a old dot matrix printer noise for a few seconds coming from the light engine after the bulb goes out. If anyone could give me any possible senarios cause if I can't fix this tv its not a big deal, I will part it for a spare for my other samsung. Just want to know if I should waste another $100 on a color wheel or could it be the light engine? It does work once in a great while as I stated. And they were always on surge protection and I have good wiring.
 

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How old is the TV and how much use has it had? From what it sounds it may simply be wear and that particular unit has given up the ghost.

I recommend calling up Samsung, heck they might even hook you up if you explain nicely the problems you've had with both TVs.


Good Luck


Best Regards

KvE
 

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Quote:
Originally Posted by jman34769 /forum/post/15467649


...Here is what happens, I turn the set on the bulb will light for about 5 seconds then it will shut off and I will get nothing but blinking lights on the front of the set. Every once in a blue moon this tv may run for a whole 15 minutes with a perfect picture then all of a sudden the picture wil freeze turn all white and then go black and the bulb will go out...

Symptoms sound like bad DMD board ($425 and install is difficult), which is on the light engine ($550 and simple intall).
 

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Try reseating all the edge connectors & wire harness connections on all the pcb's. I had one that had some really strang random problems, It needed the cable reseated on the digital board.
 

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Discussion Starter · #8 ·
Well, I can confirm the noise is coming right from the heatsink of the dmd board. I checked all connections everything seems fine, The TV does have hours on it but not overkill, Probably about 20k on it which is not that much. I thought these DLP tvs can outlast all others just as long as the lamp ballast and color wheel are replaced at some time.
 

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Discussion Starter · #10 ·
Your right, There are just some things I like more about mitsubishi, And I will state them, First mitsubishi uses a 6 color segment wheel which does work. I see yellow and very plush colors like real facial tones vibrant yellows greens and such, There ballast are enclosed and a fan cools them instead of a fan simply blowing on it, The arc tube on there bulbs are not sealed but have direct airflow on the arc tube, and they have a great reliabilty record which I can confirm, Now I don't know how samsung is doing now, They probably produce great RPTV's now but there 2005 and earlyer models seems to be plagued with problems, Just research it on google on and nothing but samsung comes up. And alot of other maufacturers seemed to have the same problems in the past and now no longer make DLP and have probably given DLP a bad name, The only 2 still making DLP sets are samsung and mitsubishi. I hope they continue to make them both companys cause I love the color and detail and size for the given price.
 

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jman34769... LED based DLP has no color wheel and no arc lamp and no ballast and very few problems.
 

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30K half-life hours is a LOT of TV viewing. That's basically 14 years of watching TV for 6 hours a day, everyday. By then you'll be wanting a new TV anyway (or holodeck).
 

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Actually the rated lifetime is >60K hours, that's 24/day for 7 years.


Another data point. Last JD Power Consumer Sat survey for large screen projection TVs was published late 2007.


Samsung was #1 by a good margin. Mits tied for last.


Not trying to create an argument about accuracy of surveys or Mits vs Samsung or anything else. Just giving some data for readers to absorb along with the anecdotal "data" provided by the OP.
 

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I feel ya buddy, I spent $3000 on my Mitsubishi WD-52525 and 2 years later it's a $1000-$1200 repair unless I wanted to fix it myself, DM board crap, then I say it's a loss and give the TV away and Buy a Samsung LED DLP for $1500 thinking it wont hurt to bad if I get screwed and now I'm having more issues.


Screw DLP's I'll never recommend them to anyone I know and I'm selling my DLP for a LCD.


DLP is Dead as far as I'm concerned
 

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My Samsung LED DLP is a DREAM.... my Mits WD-52525... very, very bad... but the warranty on the Mits paid for my new Sammy... so all is good.



As for the "screw DLPs" statement made above... that's your opinion of course... just be ready for the higher chance of dead/stuck pixels, lag and/or TBE due to bad response times and the same "light source dimming over time" problem that all displays currently have.


DLP has it's place just like LCD and Plasma... until something FAR better comes along that kills them all.


I like my DLP because it's perfect for games, has no burn-in issues, has super fast response times and when I watch movies... it looks just like the theater... since.. you know, theaters project the image onto a screen as well.... not to mention the "Green-ness" of them plus "screen size vs cost" means a larger TV and more $$$ in my pocket.
 

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Discussion Starter · #18 ·
I have to agree 2 comments above, I love DLP and never had an issue with my mitsubishi wd-57732 or I forgot the other model but its a 2006 and 2007 model, People always comment on how colorful and crisp my picture is compared to there lcd tv, but again they do not have a high end model like a sharp aqous. I really think the 6 color light engine does work wonders with color. I use mine as a computer monitor for gaming and the internet and I have everything hooked into a phillips all in one surrond system. It is my trophy and I gave my older dlps tvs for my kids rooms. To update I stripped the old 2005 sammy down and found a blown cap on the dmd board. I kept the ballast and bulb as spares for my other sammy 2004 50" cause they are the same, the color wheel was making noise and they look to be of crappy quality as the glass pieces broke right off from me just spinning the wheel by hand. They should and all others should have used a fluid dynamic bearing motor to power the color wheels, The same found in harddrives. I also kept the dlp chip to show people how it works. Pretty neat. And also DLP I don't think is going to die anytime soon from mitsubishi, Look at there giant screen models, 65"+ models. You know how much a 65+ flat screen cost? To much for me! Sammy must have really improved on quality since 05-06 as well as mitsubishi.
 
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