Question about Sharp Televison & Video

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I have a 10 year old Sharp LC-46D62U flat screen tv. The power light continuously blinks green as soon as the power cord is plugged in. There is no video or audio.

When the tv was working, I would hear a snap sound as soon as the tv was turned on. After a few seconds the video and audio would come on. Now there is no snap and no video or audio comes on. Pushing the power button does not stop the blinking green power light. The only way to stop the blinking light is to unplug the tv. As soon as the tv is plugged in again the light starts blinking.

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TV set power supplies are subject to failure of large capacitors in the power supply which only have a shelf life of about 10 years so your power supply has likely failed. Unfortunately the cost of new TVs these days Baker's such that it's not worth repairing. And there is no simple fix that I know of. I have personally recycled hundreds of these TVs with the similar issues and indication. If you're really serious about it, you can look for a replacement power supply on eBay for the same model. If you have technical abilities than replacing the capacitors would likely fix the power supply. The capacitors are not very expensive but you need to have some technical skills. Any capacitor that has leakage or a raised top even a slight amount is likely bad. Jenna Lee for a repair we replace all the caps. Good luck

Posted on Jan 09, 2018

Testimonial: "Thanks ugeeks! I hear you regarding the cost of a new tv. I guess it’s kind of personal to try and fix this instead of economical. I can buy a much better tv for a fraction of what this set cost years ago and I intend to do just that. Nevertheless, it’s kind of a challenge. I’ve built many Heathkit type projects as a kid so I’m relatively comfortable working on this. I don’t see any bulging or leaking capacitors. This board has a lot of capacitors on it and I may just start replacing them. I didn’t understand your last comment that started out “Jenna Lee...”. Thanks again for the response."

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  • 288 Answers

Sounds as if one of the components is either faulty or the solder has run and causing some problem. Go to a local TV repairer and i wouldn't think it would cost much.

Posted on Jan 09, 2018

Testimonial: "Thanks For the answer Dai!"

  • Dai Boyce
    Dai Boyce Jan 09, 2018

    It could be just the switch itself , after time they get whats called dry solder which runs slightly out of its line and makes a connection to another point on the board or breaks the connection thus causing a problem or fault.

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6ya6ya

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Posted on Jan 02, 2017

Anonymous

  • 10 Answers

SOURCE: power light blinks red, TV doesn't turn on

if you are not technical i sugest you have this checked out by a professional most probably a fuse has gone from iside or your driver board has gone down. The blinking should be normal after you have turneds it off because some capacitors will be discharging.

Posted on Aug 24, 2007

Vista Electronics

  • 1694 Answers

SOURCE: Mitsubishi WS65513 with blinking green light

Download Chris@ChrisAndNat.com .........T.

Posted on Nov 09, 2007

Anonymous

SOURCE: Sharp LCD LC-46D64U

Try resetting the TV. Here's how to do it - Unplug the TV's power cable. Keep the Channel Down and Volume Up buttons on the TV pressed and plug the power cable back into the outlet. You will hear a click when you plug it back in if the reset is successful. Hopefully this should restore your video and audio.

Posted on Feb 06, 2008

Anonymous

  • 8 Answers

SOURCE: power button is green - no blinks / no picture / no sound

Unplug it from the wall, wait 2 minutes and plug it back in. if problem still exists, its probably the main pcb.

Posted on Aug 21, 2008

ginko

Ginko

  • 19396 Answers

SOURCE: toshiba 46H84 tv turned off light blinking

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.

Posted on May 22, 2009

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These all sound classic to power supply faults. Or, there may be a board that is pulling too much current due to something that has failed, and the power supply is in the protect mode.

You have to have the service rep check the set.

Jerry G.

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