Question about Samsung HLP4663W 46" Rear Projection HDTV

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Samsung HLP 4663W DLP TV 3 lights blinking

Lamp light flashed then tv restarts a few times then all 3 lights flash. No picture or sound.

I replaced the lamp with no success, then the ballast today. I stuck a voltmeter on the ballast power plug while it was plugged in and the tv powered on and it read 320 VDC so I assume the lamp, ballast and power supply are good. Would that be right?

I did notice about a month before it quit working a winding noise when the tv was powered off after running for several hours, more like half the day. That was probably the color wheel showing signs of normal wear and tear?

What should I check? I dont know what the DMD board does but I see it's brought up allot with this fault.

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  • mattfuller30 Jan 26, 2009

    Terry,

    I'm not getting any voltage to my color wheel. I checked the power plug coming from the DMD board and it's 0vdc and I think I've read somewhere that it should be 5-7.5 vdc.



    Would this mean the DMD board is at fault?



  • wlk3920 Jan 27, 2009

    I just replace my bulb today and still have the error for lamp. Last bulb was replace in May 08. Color wheel was Sept 08. Now in Jan 09 the no picture no sound. Lamp error in on after replacing with new bulb

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Color wheel is the biggest failure part in Samsung DLP...
A little technical to replace...............T.

Posted on Jan 24, 2009

  • Vista Electronics Jan 26, 2009

    DMD is very pricey to sub, unless you can find a good used one.

    Color wheel is not expensive & you said it was "whining" recently,

    so subbing it makes some sense................T.

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We have a samsung DLP tv model number HLP 4663W tv. The picture went so we replaced the bulb. Still no picture and the tv makes a noise that sounds like a fan and the tv cycles on and off by itself. ...


Yes, almost certainly a bad color wheel, see attached photo.

If you remove the lamp and look in the direction it faces you should be able to see the wheel, look for it to be missing pieces or shattered.

You Tube has detailed video instructions for replacement in most of the Samsung sets; I have replaced dozens of the wheels.

Before you rate my solution let me know if you have any questions by commenting here.

SD TECH




sd_tech_48.jpg

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If you have already replaced the lamp and ballast, to no avail, then it is time to take it in to a certified repair center.  Most will charge a nominal diagnostic fee.  My 61" did the same thing and it turned out to be the Light Engine (of which the DMD Board is a part).
If the problem were the color wheel, the lamp would come on for a bit until the color wheel sync couldn't be achieved and then it would turn off.  The all-3-flashing-lights problem is the lamp.  Here is a page from the service manual on the 3 blinking lights problem.  
The Light Engine controls the ballast via a separate signal than the 320 Volts.  The voltage reading means that the Power Board is working properly.

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there are two such STK ics on the board replace both of them.
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