Question about Samsung DLP HL-P5663W 56" TV

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My set was turning off after a while by itself. I thought there was something run with the lamp. I took it out. The lamp was working when I took it out. Now, that I put it back the lamp light comes on at the on off swtich. What did I do wrong by taking it out.

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Never fool with led or indicator lamps.... its telling you your power is dropping out somewhere ...most likely a regulator on the PS Board.

Posted on Jan 19, 2008

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My lamp light is blinking and tvpowers on and off

Two things to try right off---first is to unplug the set for a while to allow it to try to reset itself and second if it has a lamp for the light source examine it.

Mar 19, 2012 | Standard (CRT) Televisions

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Sony FD Trinitron WEGA KV-32HS500 --had the 7 blinks problem, took out D board and resoldered pins--didn't work. But now it blinks 3 times!!\r\n . . .I guess I still have to replace those IC's Anyone have...

On some models 3 blinks pertain to a lamp cover error, lamp cover is not attached securely or lamp is not set securely causing no picture or sound. There are switches or sensors that interlock and send signals to the board telling it is set securely.

Feb 28, 2011 | Sony FD Trinitron WEGA KV-32HS500 32" TV

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I have just replaced my projector lamp on my50 dlp samsung tv. when i switced it on the power is getting there but then turning itself off and the warning light is showing on the panel. any ideas?

Are you sure that you purchased the proper lamp? Quadruple check that you've connected it properly and that there are no shorts from unwanted contact between leads/traces. If you had to solder anything, then make sure your soldering job didn't short two traces together.
The warning light is sometimes in relation to too much power running through the set, and then it shuts itself off to protect the circuits from basically bursting into flames.

Jun 03, 2010 | Samsung DLP HL-P5663W 56" TV

2 Answers

Turns off by itself

Above answers are wrong. Its actually a very basic, tiny, annoying cause. When you open the lamp door on the back of the TV, youll see a small toggle type switch that gets pushed in when the door gets re-installed and allows the TV to turn on. This is to make the power shut off in case someone tries to access the lamp with the set on. If memory serves, the toggle on my 50" samsung was blue I think. You can use duct tape or something but I actually used a very small zip tie to hold the toggle in place for a neater, less ghetto-fabulous fix. NEVER had it shut off by itself since.

Jun 14, 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

    1 Answer

    TV turns on & off by itself. Channels also change by themselves.

    Make sure your remote is totally away from the set.
    Make sure the buttons on the set are not sticky
    If both of those are ok, it's your E-Prom in the set. RCA's are notorious for this, not a major repair, maybe $75-100. The 8 leg e-rom is only about $6.00

    Apr 11, 2008 | RCA F36668 36" TV

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    Mitsubishi CS-40FX1 won't power back on

    Yes Sir, you need to read threads here or go to and it will tell you how to get set to work.

    Dec 18, 2007 | Mitsubishi WS-55807 TV

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    TV will not come on

    got it in backwards if led... pzzz dont fool with it ...problem is on the mainboard ,,,,, PS or HV is most common.

    Sep 02, 2007 | Samsung DLP HL-P5663W 56" TV

    2 Answers

    My tv will not turn on.

    First of all, forget about the remote and see if the TV functions normally using the buttons on the front of the set itself. If the TV will not power on with the power button on the set itself, then something is wrong inside the TV. If the set works fine from the front buttons but no longer responds to that remote, then the remote has either gone bad or was accidently set to a different brand. In this case, look for the original book that came with the remote (or TV if it is the original remote) and follow the instructions for setting the remote back to Zenith. Try that and post your results here.

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