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TV turns off immediately after powering up

My tv turns itself off after I turn it on. I have checked power cord, unplugged it for 1 hour. The picture never appears, just the blue screen then it's gone.

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The problem is inside... maybe there is a loose solder connection on the board, or a deffective parts at powersupply...either the capacitor...or other possibility is there is a house lizard died inside...

Posted on Sep 11, 2008

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1 Answer

TV turns off and immediately on again, by itself.


sounds like a defective str power regulator ic .......but my advice get a tech to resolder all the pins at the power suppy board area, there may be some open pins that triggers the on and off episodes

Jul 18, 2013 | Televison & Video

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I have a Model TC32LX70 Serial MX72540116. I also have Verizon Cable. The TV set keeps going off and I have to manually turn it back on. Sometimes it will go off and cannot be turned back on but will...


Hello
If the power indicator is blinking on the front of the VIERA, turn off the TV and unplug all HDMI cables that are connected to the TV. Then unplug the power cable from the current power source. Try a different electrical outlet. Remove the power cable from the rear of the TV and plug it back it in (the power cable tab is inserted correctly when you hear a click).
Just unplug the tV from AC powwer wall socket, let it be at theis state for about 30 minutes, replugh the TV only, and check whether the fault rectifes. OK.

Apr 23, 2011 | Panasonic Televison & Video

1 Answer

Standby light blinks twice after turning itself


this a code that mean overvoltage in power supply (+B)

Mar 20, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Watching tv when the picture went black and now the green on light flashes for 30 times and turns off


A green flashing light for this model of TV indicates that the lamp cover is open on the TV.
  1. Unplug the power cable to the TV.
  2. Remove the 2 retaining screws on the lamp cover with a Phillips type screwdriver.
  3. Remove the lamp door completely from the TV.
  4. Remove the two retaining screws on the lamp case.
  5. Lift up the fixed wire handle of the lamp.
  6. Pull out the handle slowly and remove the lamp case.
  7. Insert the new lamp gently into the correct position. Make sure it is inserted correctly.
  8. Using a manual Phillips screwdriver (Do Not use an electric screwdiver), tighten the screws you removed in
    step 3.
  9. Replace the lamp cover and tighten the cover screws.
  10. Plug in the power cord and turn on the TV. After the initial warmup period (which may take up to several
    seconds for full picture brightness), the TV should operate normally.
If any of the following conditions exist, turn off the TV, unplug the power cord, and repeat steps 1–9 to ensure that the lamp unit and lamp unit
door are installed correctly:
  • The lamp indicator flashes green.
  • No picture
  • Dark picture
  • TV will not turn on
If, after repeating steps 1–10, the problem still exists, call Customer Service at 1-800-631-3811.
Source

Aug 31, 2009 | Toshiba 44NHM84 44" TV

1 Answer

No power on, but steady blinking green light


The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Feb 26, 2009 | Emerson EWF2004 20" TV

1 Answer

TV picture wont come on, led light blinking, we have sound


The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Jun 30, 2008 | Toshiba 36HF73 36" TV

1 Answer

TV turns on, then immediately off again


The flyback transformer are damaged.

May 26, 2008 | RCA TruFlat 27F520T 27" TV

1 Answer

Assistant


check your sleep timer settings thats the most comman prob

Dec 18, 2007 | Philips 27PT81S 27" TV

2 Answers

Tv powers on, then switches off immediately


check out ctechnicians.com and find error codes

Oct 07, 2007 | Mitsubishi VS-60607 TV

1 Answer

TV LED Flashes then TV shuts itself off


capacitor problems in power supply or a regulater isolate the power suppley by disconecting the line output stage/unplug scan coils for example and run a 60w bulb as a dummy load one wire to earth and the other to rail voltage colecter of line output transister if the bulb glows steady the power supplys fine

Jun 25, 2007 | Philips 27PT81S 27" TV

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