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Samsung DLP TV Powers Off by Itself

I have a 43" Samsung DLP Tv and it just started to power itself off. It will not power back on unless I unplug the power from the wall. Then I plug it back in and it works fine for about 3-5 minutes then shuts-off again and i have to go through the same routine.

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Re: Samsung DLP TV Powers Off by Itself - Proton MM2701VT 27" TV Standard (CRT) Televisions

Yes i have the same problem i need help

Posted on Jan 31, 2009

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Samsung DLP turns on and off - cycle repeats

make sure put the lamp door back before trying to turn it on because they have switches on them that allow the tv to turn on. If that is ok you probably have a bad ballast.
Call a local tv repair shop to further diagnose the problem.

Dec 10, 2009 | Samsung DLP HL-P5663W 56" TV

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I have a 61" samsung dlp. It worked fine

Start with replacing the lamp. Then move on to the Ballast. Then the color wheel. Then the Power Supply. One of those parts should fix it. If not call back.

Jul 15, 2009 | Samsung DLP HL-P5663W 56" TV

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The tv continually turns itself off The tv powers up fine, but will power down by itself. Soemtimes it will stay on for an hour, but more than not I have to turn it back on every 10 to 15 minutes

1. In this case its better not to use in order avoid damage on the board. The problem is simple and is only by loss contact of components on the board due to heat and mechanical undergone during the usage, resoldering it well can remedy the problem. It can be also a defective tack switch which needs to be spray a contact cleaner because of its dirt which cause it loss contact.
2.If your a technician I can give you my technical troubleshooting guide if you confirm that you do. If not its better to bring this problem to a reliable and trusted service center to avoid broader problem on your tv.

Jul 10, 2009 | Samsung DLP HL-P5663W 56" TV

1 Answer

My 56 inch hi-def projection samsung tv turns off automatically

    1. Ensure that the TV is off. It may be advisable to unplug the TV as well.
    2. 2 Using a Phillips screwdriver, remove the single screw affixing the lamp cover (the small, grill panel on the back of the set) to the chasis. There is also a grill that is held in place by tension. Just "pinch" the thumb clamp on the bottom of the grill and slide it out. This is the same procedure you would perform to change the lamp, except in this case you will not need to remove the lamp itself.
    3. 3 Inspect the spring-loaded blue safety switch to ensure it is making good contact when the panel is secured. The switch should deflect downward when the panel is replaced. If the contact with the panel is suspect, very gently bend the metal bracket on which the switch is mounted.
    4. 4 Replace the grill cover and the lamp door, and continue to enjoy your TV.
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  • 5.Check some basics first. Make sure the sleep timer on your TV hasn't been turned on, telling your set to turn off at a certain time. If your DLP TV is acting erratically, Samsung recommends turning the set off and unplugging it for 30 minutes. After 30 minutes plug it back in and turn it back on. Unplugging the set resets it, and that may fix the problem.
  • 6 Check your power supply. Make sure your Samsung DLP is securely plugged into a working outlet. Plug the TV into a different outlet to see if the problem still exists. Make sure that a fuse hasn't blown in your house or a circuit breaker hasn't flipped.
  • 7 Replace the lamp. If your Samsung DLP is shutting off or won't turn on, a bad lamp is the most likely cause. To replace the lamp, remove the lamp cover from the back of the TV by removing the screws with a Phillips screwdriver and slide it out and away from the TV. Remove the screws on the lamp assembly and slide it out of the TV. Disconnect the old lamp and insert a new lamp into the assembly. Slide the assembly back into place and replace the screws. Do the same for the lamp cover.
  • 8 Check for signs of overheating. Samsung DLP TVs generate a sizable amount of heat. If the components inside the TV get to hot, the TV will shut itself off as a protective measure. Make sure your DLP is out 12 inches or so from the wall. Make sure that all of the vents on the set are clear of any obstructions. Allow the TV to cool down for 30 minutes before turning it back on.
  • 9 Contact Samsung. If none of the above tips help, it's time to contact Samsung, as the problem is likely something that should only be fixed by a qualified service technician. More serious problems may include a bad power supply or a bad ballast. Attempting to repair those yourself will void your warranty and may cause more serious damage to your set.

  • The safety switch exists so the user does not accidentally remove the lamp door while the TV is on. Doing so could, theoretically, result in burn or electrocution. This spring loaded switch causes the TV to shut down when the door is opened.
  • Since the TV's chasis is plastic, expansion and contraction can cause the switch to lose firm contact with the lamp door. The TV's behavior could then be such that after being on for a while (getting warm) the plastic expands and the switch loses enough contact to cause the TV to shut down. The frequency with which this phenomenon occurs is not only dependent on the internal temperature of the TV, but also the ambient temperature of the room as well as the relative tension on the switch itself. The user's perception is that the TV starts up fine, but then "randomly" turns itself off after being on for a while.
  • If you have recently moved your TV, it is very common for random shut-downs to occur. This is because the move has shifted the flimsy plastic chasis of the TV, thereby loosening the contact between the lamp door and the switch.
  • Make sure your TV is off and cool when performing this procedure.
  • Mar 06, 2009 | Samsung DLP HL-P5663W 56" TV

    2 Answers

    Samsung dlp HL56A65 turns off and on by itself

    It looks power board problem.
    You need to get service from Samsung.

    Mar 04, 2009 | Samsung DLP HL-P5663W 56" TV

    1 Answer

    My TV powers off by itself for no reason.

    If you have read any of the previous post about this....sounds like a overheating issue. This happens quite often with overhead projectors also. Keep in mind that this is only guidance but it might be a good idea to open up the unit and get rid of dust. Dust becomes an insulator on all electronics (power supplies, electronics, lamps) or use some of the other quick fixes mentioned in the other post like add cooling externally. Hope this helps.

    Dec 26, 2008 | Samsung DLP HL-P5663W 56" TV

    1 Answer

    Powers on by itself

    TV worked FINE for the past 2 yrs---this morning we woke up and the screen is totally BLACK! No sound..nothing. REmote doesn't do anything to the TV. Red light says ON unless we unplug it. Remote won't turn off the TV.
    Any advise? Picture tube??
    Worked great w/out any problems until we woke up today!


    Jun 01, 2008 | RCA 32V420T 32" TV

    2 Answers

    Samsung dlp hdtv turns itself off

    Have a 46 inch behaving the same way. I have the extended service contract, so they are getting a calll tomorrow. I ll post what they say

    Dec 27, 2007 | Samsung DLP HL-P5663W 56" TV

    2 Answers

    Samsung HLS4266W 43" dlp

    Power issues (Tv not turning on) were typically due to faulty ballast. While the TV reports a bad lamp it is the ballast itself causing the issue. Samsung is well aware and will replace both the ballast and the lamp (since the lamp can be prematurely aged but the bad ballast). After replacment most people stop having issues.

    Dec 24, 2007 | Samsung DLP HL-P5663W 56" TV

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