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Power goes off by itself, then boots up again

Have already installed a new power supply, and new power cord, checked the power strip (surge suppressor) and wall outlet, but this problem keeps happening. What else could it be? This is an Insignia D400a (Best Buy in house brand)

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In computers, any number of problems can cause this - bad RAM, bad hard drive, fried voltage regulator(chip in a laptop), overheating cpu, overheating video card/gpu, there are even a few device drivers that can do this if they become corrupt. Usually, however, its not an issue with the power supply/power source.

I would try swapping the RAM with new(or known good) sticks. Also, make sure the system is clean, and no dust has built up in it, especially in/around the fans.

If the RAM swap is unsuccessful, and the system is clean, check and make sure the fans spin when the system is on.

Power down the system, disconnect the data and power cable from the Hard Drive, and turn the computer back on - you won't get into the OS, but you'll be able to determine if the issue occurs w/o the hard drive connected.

Ultimately, it may come down to a bad motherboard.

Posted on Feb 10, 2009

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When I turn on my Sony TV, ti stays on about 30 seconds then shuts off, What do you think is wrong?


Do a Power Reset.
1. Turn off TV.
2. Unplug the power cord of the TV from the electrical outlet.
3. Let the TV remain without power for 60 seconds.
4. Plug the power cord back into the electrical outlet. (If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.)
5. Turn on the TV.
If issue persists after doing the steps, reset the TV to factory default settings.
1. Turn on the TV.
2. Using the supplied remote, press and hold the UP arrow button.
3. While holding the UP arrow button press the POWER button on the TV itself.
4. When the TV goes off, release the POWER and UP arrow button.
5. The TV will turn on by itself and the initial setup screen will be displayed. Just follow the on-screen prompts to finish the setup.
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How to fix a motherboard that does not turn on at all.


Make sure there is power at the outlet, surge suppressor, power strip. Be sure any connected UPS is on. Try again.

Remove any recently installed hardware and go for boot. If the PC boots, check to make sure that the new hardware does not overload the old power supply - if it does, replace with a higher capacity power supply and go for boot.

Open the PC. Look for indication of power - LEDs, fan, etc. Replace the power cord between the outlet and computer if one is available, and go for boot.

If possible, obtain a power supply tester to determine if the power supply has failed. Replace any failed Power Supply and go for boot.

Disconnect power. Disconnect all non-required cables and accessories. Leave only the power and data cables for power supply, boot drive, video card, mouse, memory and keyboard connected - everything else should be removed (with the exception of the small cables that go to the MoBo headers for LEDs, and switches on the case). Everything means both data and power cables. All controller cards should be removed as well unless using on-board or built-in controllers. Reconnect power and try for Boot.

Add devices, cables, etc one at a time to determine which is causing the fault. A PC that boots and shuts down shortly after could be an indication of overheating / over load. Clean dirt & dust from case, ventilation slots, etc. Make sure all fans spin freely - replace any that do not.

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1 Answer

Printer keeps telling me to reinstall print cartrige. will not print any documents


  1. Unplug the power supply from the rear of the product.
  2. Unplug the power cord from the electrical outlet, power strip, or surge protector.
  3. If the product uses a power module with a detachable power cord, disconnect the cord from the power module.
  4. Wait 15 seconds.
  5. Reconnect the power cord to the power module.
  6. Plug the power cord back into the electrical outlet. Do not use a power strip or surge protector.

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I have a gateway desktop computer. Recently moved


Before you actually replace the power supply, check some other things first:
1. Wall socket
2. Power strip/surge protector
3. Power cable
4. On the back of the computer, where the power cable plugs into, is the red switch set to 115? It should be 115.
5. Make sure that the power cable is not connected to a regular extension cord. Power cable must plug directly into a surge protector that is not daisy-chained to another power strip, surge protector, or normal (household) extension cord. Surge protector must be directly plugged into wall socket.

If none of the above solve the problem, open up the case and ensure that all power connections are secure. Also check ALL other components' connections. Any loose connections can cause problems for you.

If everything is secure and the problem persists, replace the power supply.

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Sony KV-34HS420 shuts of and stand-by light blinks


  1. Turn off the television. IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.
  2. Unplug the television power cord from the electrical outlet.
  3. Let the television remain without power for 60 seconds.
  4. Plug the power cord back into the electrical outlet. NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
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Source

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Press the POWER button on the television.
Press the POWER button on the remote control that was supplied with the television.
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Unplug the television power cord from the electrical outlet for 30 seconds.
Plug the power cord back into a known working electrical outlet.
Attempt to turn on the television.
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KDF-E50A10
KDL-V26XBR1
KDL-V32XBR1
KDL-V40XBR1
Unplugging the above television models from the electrical outlet may only be a temporary fix. The problem may reoccur after several months of use. To completely resolve the issue, a software update is available.

For all other models, service will be required if the troubleshooting steps do not resolve the issue.

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