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Samsung 42" dlp turns itself off in 30 secs and 3 lights blinking

Tv is about 2yrs old. problem started with tv turning itself off at random (annoying, but it was very random and only about once a mth). Now tv will act like it is trying to turn on after hitting power button, but never shows signal and shuts off after 30 seconds and 3 lights on front start blinking. From a little research it looks like this is a fairly common problem with Samsung tvs, but what specifically causes this and how can I repair the problem? Any help is appreciated.

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  • Samsung Master
  • 33,294 Answers

The power supply could be failing.

Posted on Jun 02, 2017

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

techman
  • 3130 Answers

SOURCE: rca (tomson)t25062 keeps shutting off

First thing to check would be L401. Its a small coil from the secondary side of the horizontal driver transformer to the Base of the horizontal output transistor. Not a solder problem, You must take it out and scrap off the leads to remove the excess enamel paint the reinsert and resolder. Also check connections on the driver transformer too(horizontal). Next check for bad solder connections on the flyback transformer too. Good Luck PS please dont forget to rate this thread.

Posted on Oct 21, 2006

ctf1800
  • 4402 Answers

SOURCE: tv shutting itself off after appx. 30 secs. no sound

convergence ic bad

Posted on Dec 10, 2007

  • 1 Answer

SOURCE: Emerson TV won't stay on

Someone told me that the timing is off in the vcr and that they would have to rebuild the whole tv, which is more expensive than buying a new one. I saw on another site that someone has to leave a vhs tape in the vcr for the tv to work, I think that I am going to try that.

Posted on Jan 10, 2008

premtech
  • 934 Answers

SOURCE: Magnavox MWC24T5A

It is most likely a bad IR diode underneath the prisim in the VCR, common failure for those combination units. I have used a simple generic diode from Radio Shack or you can spend a little more and get the politically correct part from almost any electronics vendor like Vance Baldwin ot Tritronics.
Be observant when installing these they are polorized and go in only one direction. Getting one in reverse will burn up the new diode instantly.
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993

Posted on Nov 24, 2008

ginko
  • 19396 Answers

SOURCE: Remote control for Sharp TV

Hold down the tamper proof button on your remote for up to ten seconds, until the tamper proof light will blink and light will go off. This will turn off the Tamper Proof button.

Let me know how it goes.

Posted on Apr 09, 2009

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2 Answers

Why is my 42" dlp tv turns itself off after awhile?


the power supply is not working fine. your tv needs preventive service so that semiconductor, diodes and capacitors are changed on the power supply before it switches off completely on its own.
do it fast
okay

Jan 05, 2010 | Samsung DLP HL-P5663W 56" TV

2 Answers

I have an LG DLP. that turns off after 15 -30 seconds


If the second light is blinking to orange or red, that is usually the lamp indicator light on an LG DLP tv. That indicates your bulb needs replaced, or something surrounding the bulb has failed (like the cooling fan for the bulb for example) IF you have a spare bulb handy, I'd replace the bulb, keeping in mind if you touch any part of a new bulb with your bare hands, you just cut the life of the bulb by more then half.

Jul 30, 2009 | LG RU-52SZ51D 52" Rear Projection...

1 Answer

Had a power outage while watching tv. Then 3 blinking lights.


This is an on-going problem with DLP sets. Normally you shut the set off and the cooling fan cools the lamp down and then it shuts off. In your case, of which it's not your fault, however your lamp has taken a major hit by not properly cooling down, in turn, you need to replace your lamp at this time.
I suggest in the future if you have an electrical storm and a chance of a power outage while your watching tv, I would'nt play that model or any other model of a DLP set.

Jun 23, 2009 | Samsung HL-S5087W DLP TV

2 Answers

Have a 42 inch dlp samsung the tv is starting to turn it self off random. after being on for a long period of time


We have had the same problem with our 42" Samsung DLP - only two years old! We searched all over the internet for a list of ways to fix it. I found several things can help, including a switch that pops to the wrong position, cleaning the fan, etc. I put all the information together in a how-to format because it was so frustrating to go all over the internet looking for ideas on how to fix it.

http://www.ehow.com/how_4802985_fix-samsung-dlp-tv.html

Mar 14, 2009 | Samsung DLP HL-P5663W 56" TV

1 Answer

TV TURNS OFF AFTER 20-30 MIN


Ensure that the TV is off. It may be advisable to unplug the TV as well.
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 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 Replace the grill cover and the lamp door, and continue to enjoy your TV.
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.

May 28, 2008 | Samsung HL-R4266W 42" HDTV-Ready...

1 Answer

PROBLEM WITH SAMSUNG DLP TV


disconnect the power and hold in the power button for 30 seconds to reset it.

Feb 20, 2008 | Samsung DLP HL-P5663W 56" TV

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