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Iv'e been trying to turn my tv on for an hour but the led light just keeps flashing why won't it turn on?

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The flashing light is a service code for a technician to let him know there is trouble with the set. Most common issue on these is the power supply or one or more of the circuit boards. You can try a reset by unplugging the set and let it sit for an hour or so, preferably overnight then plug it back in this sometimes clears codes and then it can resume.

Posted on Apr 08, 2011

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Posted on Jan 02, 2017

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diodeic
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SOURCE: My sharp Aquos LCD TV

Hello,


Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.


Hope this help in solving the problem......

Posted on Jan 27, 2011

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Red light keeps flashing tv will not turn on


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.

You can find parts here,

Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

Electronic Replacement Parts: Plasma & LCD TVs, Appliances |

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The high voltage power supply is going bad on both units.. Pretty soon, it won't power up at all. For a fact.
Don't try to replace the power supplies, TV's are too cheap.

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