Question about Samsung DLP HL-P5663W 56" TV

13 Answers

White dots appearing on screen (ever increasing number)

Samsung DLP TV HL-S4676S

In the last two weeks I've noticed two white dots (1/8 inch or less) appearing on my set. They are constant regardless of channel or input source. The set is about 18 months old and the number of dots are now in excess of 20-30. I'm at a loss as to what may be wrong. Can you help me?

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  • 4 more comments 
  • glenhogan Oct 13, 2008

    Thank you, but I do not understand "convergence problem". Let me reiterate, this is a HL S4676S DLP Samsung TV. It is not under warranty (I did not buy the extended option) and am interested in assessing the cost and complexity of correcting the problem. The bright, white dots (1/8 inch or less, are randomly distributed and now number approximately 30 or more. They are stationary, appear all over the screen regardless of input (DVR, DVD or PC), and very distracting. What do you recommend? Other than the bright dots, the picture is excellent.

  • glenhogan Oct 14, 2008

    Can you venture an educated guess as to what my problem might be? Could it be as simple as dust particles causing the problem? I am unable to locate a Samsung tech in my area and will likely need to transport the set to another location.

  • glenhogan Oct 14, 2008

    I completed the hard reset as per your instructions with no luck. The points of light are still there. You suggested I may need to replace the screen. What screen are you talking about? The external screen (viewing area) does not seem to be the problem as the dots move when I slightly depress the screen. Are you talking about an internal screen, if so I suspect that will require a technician. Any idea how complex and expensive that fix would be?

  • glenhogan Oct 16, 2008

    I have removed and gently cleaned the bulb and compartment (very little dust). The bulb does not appear to be the issue. I also removed the access portals and checked for dirt on the mirror, screen and lense then lightly brushed all with an optical brush. The approx. 20 white points of light are still present. Let me remind you again that this is a HL S4676S DLP, less than 2 years old. Other recommendations?

  • glenhogan Oct 18, 2008

    Does your lack of response on my last comment mean you've essentially run out of possible solutions?

  • glenhogan Oct 18, 2008

    I get the feeling I'm "talking" to some automated response system. If not, look at the possible diagnostic impressions you've given me in this thread. I can't see anything that suggests you have a clue as to what is wrong with my set. How hard can this be for an "expert" to diagnose?

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Good morning sir,
it has something to do with the with the color wheel to replace it here's the instruction
http://www.jangro.com/a/2006/07/24/samsung-dlp-replace-color-wheel/

Posted on Oct 18, 2008

  • William Nabaza
    William Nabaza Oct 18, 2008

    if all else fails, you may try the service request
    http://www.samsung.com/us/support/repair...


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I'm not to up on projection T.V.s but it sounds to me that what ever is used to create the color is having the problem as though it is or has gotten t hot and little flakes are peeling off whether it be a color wheel or the actual bulb or bulbs themselves. AgainI am just taking a shot in the dark. I would think that if it was dust particles ithey would show up dark rather then white.
Good luck either way.

Posted on Oct 16, 2008

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The dots are most likely not related to the screen. The screen merely provides a surface for the reflected light to project on to so you can see a picture. The fact that the dots move a little bit when you push on the screen indicates that the dot is present in the projected image. This could be caused by a few things. It's possible that it's the DLP chip (millions of micro mirrors) is defective although if the problem is getting worse I'd suspect something more in the circuitry that controls the DLP chip. It's unlikely that it's the color wheel as I think the dots would move around a bit on the screen.

There is no screen as such inside the cabinet of the set, there's the DLP chip (or mirror assembly) and a series of lenses to project the correct sized and focused image on the screen. Also, there is no convergence circuit as some have suggested. They are only present in CRT rear projection (the old style projection tvs).
Bottom line, there's probably not much you can do with it at home and there are many ways you could make the problem worse by not knowing the proper service techniques.
Too bad you don't have a service center in your area, sounds like you're going to have to transport it to one.

Hope this helps.

Posted on Oct 14, 2008

  • Inno Laur Oct 14, 2008

    Further, the cost to repair is very very hard to estimate without actually seeing it and doing some testing. An experienced DLP technician should be able to ballpark it for you as he/she's likely seen something similar before.

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Your screen is composed very tiny lights that creates color - and those lights also dies unfortunately. repair or replacement is an option but get a quotation first.

further reading will help you better understand how a DLP TV works

Posted on Oct 14, 2008

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The spots are caused by the bending movement of Lenti Screen partly due to changing temperature and etamorphosis of Fresnel screen. The pointed ridges in the pattern of the Fresnel screen become
distorted and cause this phenomenon. The effect is most noticeable on a lighter background.
It appear like the screen needs to be replace. Click here to have an idea how much the part cost.

Let me know if you need further assistance.

Posted on Oct 14, 2008

  • Jaime Hernandez Oct 14, 2008

    The part number given is for reference purposes only. If you decide to have the lenti screen replace, contact samsung for the proper part number.

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You know..maybe i am missing something here..seems that what you are experiencing is the province of a certified technical professional. so, with that, figure around 400 dollars for service and parts, assuming not much is wrong..i do not see you as being the one to wrestle with this, unless i am misreading this completely

Posted on Oct 14, 2008

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If you require a technician at your door step.
on the fixya home page there is a column REPAIR SERVICE in that you select the proper category as televisions and then enter the exact zipcode of your area.the repair centers near to your area will be displayed on your computer screen in a minutes as you press GO button.and the phone numbers will also be listed on the screen beside their company adress.you can call them and decide the charges.and they will visit at your place no need of transporting your device.

thanks.

Posted on Oct 14, 2008

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I would take bul out clean the area in ther **** vac lighty and buy new bulb ok

Posted on Oct 14, 2008

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You can try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and replug to AC power and redo the cabling. Switch on the TV and see if it works..If this did not work then there problem in the screen you may need to replace the screen......



Good luck...

Posted on Oct 13, 2008

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It may be problem in convergence'

Posted on Oct 12, 2008

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  • mohammed marika thambi
    mohammed marika thambi Oct 14, 2008


    your DLP chip itself most likly is bad .. its only dust on the DLP chip,,

    you may have defective dlp light engine contact samsung for more info



  • mohammed marika thambi
    mohammed marika thambi Oct 14, 2008

    replacing the bulb to get to the cause
    that some dirt or some dust could be causing this. site...
    http://fixyourdlp.com/blog/2007/02/15/resetting-your-samsung-dlp-lamp-hour-...

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  • mohammed marika thambi
    mohammed marika thambi Oct 14, 2008

    check ur video output cord in ur internal board..



  • mohammed marika thambi
    mohammed marika thambi Oct 19, 2008

    have u get rid from ur problem?



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The colour wheel needs to be replaced. You need a technician to get the wheel replaced. color wheel part number for that is BP96-00250A. This color wheel is used in many, many Samsung televisions, but you should confirm that your model is on the compatability list.
Below is the steps given on how to change the colour wheel :
The Repair Job
Requirements:
Philips screwdriver, not too small and at least 5 inches long. There’s one screw that’s a reach.
Tiny (jewler’s) screwdriver. You may not need this. I needed it to get a connector off.
Tweezers. I needed them to get to a few screws in tight places.
Compressed air. I didn’t have this, but I wish I did. It’s dusty in there.
Pen and paper. I took copious notes. If you do anything that I don’t talk about here, you should write it down. I carefully documented every cable that I unplugged and every part I removed. Thank God I did that.
1-2 hours (first time I did this, it took 90 minutes. Second time 60 minutes, with photography)
Nerves of steel and air conditioning. Don’t drip sweat into your television.
Thanks

Posted on Oct 12, 2008

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Symptom seems problem in color engine and Samsung Tech is required to check tv physically.

Posted on Oct 12, 2008

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  • 399 Answers

It could be the problem of the convergence in your tv .if under warranty please get it replaced.as it will increase by time.

Posted on Oct 12, 2008

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