Question about Samsung DLP HL-P5663W 56" TV

8 Answers

Samsung dlp HL-P5663W picture shutting off

Purchased Samsung DLP HL-P5663W new 06/2004. Has worked perfectly until 04/2008. Started having picture turn off only a few minutes after being turned on. Audio continues to play. No LED signals. After turning off and back on after letting set rest a few minutes, TV starts up fine again for a few minutes then picture shuts off again with audio continuing. After a few times the picture stays on for several hours or even the rest of the day. After blowing out the back with a compressor in 04/2008 the picture began to stay on longer and the shutting off problem eventually disappeared.

Now it has reappearred. The picture goes out after a couple of minutes but the audio remains. I have taken the back off and blown it out with my compressor but no change. HELP!!!!!!!!!!!!!!!!!!

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  • cofisch Dec 21, 2008

    Purhased Samsung DLP HL-P5663W new 06/2004. Has worked perfectly until 04/2008. Started having picture turn off only a few minutes after being turned on. Audio continues to play. No LED signals, just normal like there was a picture. After turning off and back on after letting set rest a few minutes, TV starts up fine again for a few minutes then picture shuts off again with audio continuing. After a few times the picture stays on for several hours or even the rest of the day. After blowing out the back with a compressor in 04/2008 the picture began to stay on longer and the shutting off problem eventually disappeared.

    Now it has reappearred. The picture goes out after a couple of minutes but the audio remains. I have taken the back off and blown it out with my compressor but no change. HELP!!!!!!!!!!!!!!!!!!

  • cofisch Dec 21, 2008

    It does not appear to be the lamp, as it is fairly new, does not show any "burn" spots or dots. It lights up when you first start the set and the picture is perfect for about a minute before the lamp shuts off. The fan continues to run until the set is shut off. The audio continues as if everything was normal, except once the lamp turns off, the audio can not be adjusted either up or down. Whatever loudness level it was at while the lamp was on, stays in place.

  • cofisch Dec 21, 2008

    You think it may be the filter capacitor on the ballast. Where is the ballast on this set and the related filter capacitor. would the lamp just turn off after a few minutes because of this problem? Its almost like turning off the lamp due to overheating, but thefan appears to be working fine, and there is a lot of room for air circulation. Could it be a faulty temp sensory switch?

  • cofisch Dec 21, 2008

    Dipu007 you are way off base

  • cofisch Dec 21, 2008

    I know how to change the bulb. I do not believe the problem is the lamp. It may be the ballast or ballast related, but seems more like some sort of faulty temp switch.

  • cofisch Dec 21, 2008

    I'm starting to get excited. The ballast board you described appears to be directly under the lamp. The lamp module slides along rail attached to the ballast board and electrical connections for the two big black wires snap together. On the ballast board is what looks like an electromagnet and a black module with a part # EUC120 P/H11. Between this module and the electromagnet are what appears to be 2 orand capacitors. Around one of the capacitors is white goop which might have leaked out of it. Do you think this is the problem and if so how do I fix it? Do I replace the ballast board or just the capacitor?

  • cofisch Dec 21, 2008

    There are many boards within this set. You state things like anyone should know them. I think the other tech was on the right track. I hope he will respond concerning the ballast board.

  • cofisch Dec 21, 2008

    I have no picture tubes

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Just check out  www.partstore.com  for required parts as select the proper model number of the tv and the lists of parts will be shown up with appropriate rates order the required parts.

Posted on Dec 21, 2008

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I think you have a bad deflector...it carries the current to the picture tubes and tells the to stay on or shut off.

Posted on Dec 21, 2008

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Hi there,

The Power Board is failing/shorting out. Take the back off and check the board for all the capacitors. Check to see if they are loose or bulging.

Bulging capacitors are more likely, as you said that when you blow out the back it seems to work better. Dust collections stop the tv from "breathing" and it eventually overheats (bulging of capacitors)

If you find this to be the problem, you can fix the problem yourself, but only if your competent enough in the use of a soldering iron, and you MUST make sure that the new capacitor/capacitors are EXACTLY the same. They have little colour bands around them. Each colour and place of the colour, determines how much power they hold.

If you don't feel confident enough to do this, please find someone who is. Capacitors can still hold a large enough charge to kill someone, even after they have been disconnected for a couple of months. So please be careful.

Tim

Posted on Dec 21, 2008

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This is more than likely a problem with the color wheel. It sounds like it is going bad. Most DLP sets WILL turn off the picture if the color wheel stops to keep the wheel from being damaged. 

Posted on Dec 21, 2008

  • Josh Crager
    Josh Crager Dec 21, 2008

    Just google HL-P5663W color wheel 

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Hi and welcome to FixYa,

Initially and based on your description, heat and dust related. I would assume no major component defective nor needing replacement. Most probable cause would be an overheating component or the cooling fan not activating early enough. A most probable cause is the thermal sensor (being covered with dust) and therefore does not sense the ambient temperature correctly. Failing to read the temp correctly, the sensor would not be able to trigger the cooling fan to activate at the desired moment.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 21, 2008

  • Louie  Role
    Louie Role Dec 21, 2008

    This page might be able to give you additional insights as well as illustrated guides.

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It could be the lamp or balast -
when the picture drops out, see if the lamp inside is still shining. if so, the lamp and ballast are ok. if not, its likely one of the other.. most likely the lamp. inspect it to see if it looks free of white spots or burn spots in the main element (any can be signs of bad lamp). if the lamp looks ok, it could be loose connections to the back of the bulb, those can be retightened with careful patience. the ballast fires the lamp and could also cause the same symptom.
This problem is strange because the tv should flash all 3 leds when lamp drops out..
it does not.. maybe the lamp is still on, youre losing video -
the tv has a analog and digital video board. - check the inputs to diagnose which one..
check for the tv menu. if you cannot get any video it could be in the light engine (dmd board failure)

let me know details, I can talk you through it.

Posted on Dec 21, 2008

  • thielectronick
    thielectronick Dec 22, 2008

    Yeah I'd say its likely the ballast.. however the white stuff is probably silicone glue just holding the caps in place.. it could be leaking fluid but its usually black.. look at the tops of the caps. If theyre large, they'll have lines in them for which pressure to release if they go bad.. otherwise they'd elxplode. If the top is domed up, this could be your suspect part.. I know of no issue with these caps, we just replace the ballast.



    To diagnose the ballast, there are two connections.

    1 - big wires - 2 wire plug - 360Volts DC - power line

    2 - little wires - 5 wires usually - data line (ie turn on ballast!)



    If you have a multimeter, you can check the higher voltage by putting one lead into each wire - dont check on chassis ground - it varies a lot but will be like 260-380 volts.. they you can check the data lines - - this is where 5volts comes in to power the control circuits - one line is 5v all the time, another goes up to 5+ volts or 3.3v to tell the ballast to fire (lamp enable) ..



    if you dont have a multimeter, look for the spark gap firing - its a white cylinder looks like this

    when it fires the lamp, if the lamp is bad, it will fire the spark gap and it will glow blue-purple.. if it does, your lamp is bad. you have to have the lamp door closed, so look through the back.. or listen .. the spark gap makes a buzz sound for like 1 second



    the strange thing about your problem is no error code.. ie faulty ballast or lost voltage from power suppy (360v.) in a rare case i guess it could be loss of lamp enable signal from the DMD board .. all seem rare, probably ballast.

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  • 106 Answers

If you have no LED signals, I think the filter capacitor on the ballast is bad. I have seen this on several occassions. The only real way is to be there and see what is happening with the back off of the set. You may want to a a tech check the unit out. This is not a big problem and should be easily resolved. Lwt me know if I can be of further assistance

Posted on Dec 21, 2008

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  • tvguy171
    tvguy171 Dec 21, 2008

    I am assuming that with the back off you have verified that all the fans are running. If there are no swollen capacitors on the ballast, the lamp has been replaced, the only other thing I have seen that causes this problem is the DMD board. Tyhe DMD board is a last resort after checking all the previous things due to the expense. If I can be of further assistance, let me know

  • tvguy171
    tvguy171 Dec 21, 2008

    If the temp sensor was bad you would have a flashing light on front of the set. I have seen a lamp cause this problem. I have also seen the DMD board cause it. The ballast can be found right by the lamp. You will see 2 big black wires going from th ballast to the lamp. The ballast module will be about 4inches wide and 8 inches long. On one end it will have the black wires I described earlier. The other end will have two other sets of wires. If you see no swollen capacitors on this board we can assume it is ok due to the lamp lighting.

  • tvguy171
    tvguy171 Dec 21, 2008

    You can just reploace the capacitor. If you look on the side it will have a rating. An example is 2200 mfd and the 50Volt. I don't know the exact value but you can get one just about anywhere. Let me know if you need anything else

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