Question about Sharp LC46SB54U 46 in. LCD TV

1 Answer

Power light flashes intermittently and will NOT power up.

Worked fine until the other morning when i turned it on it turned itself off after approx 3-5 seconds. This repeated twice then all I get now is the power light flashing intermittently on and off. I have disconnected the power cord for several hours guessing that it might reset its self but the problem continues. Approx two years old.

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  • Master
  • 1,003 Answers

Replace mainboard and powersupply!

Posted on Jan 21, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

dsacco86
  • 1077 Answers

SOURCE: Sharp LC-26D43U Power light flashes and unit won't turn on?

It's a power supply related problem. When it turns itself off, this it called protection mode. The TV automatically turns off to protect other parts form being damaged.
The most common problem is the Power Supply Unit or the Backlight Inverter Board.
You may have to take the TV to a repair shop to find out which one is bad. Paying a repair shop to replace the board for you maybe more than the TV is worth. If you let them diagnose it and you replace the bad circuit board yourself, it would be cheaper.

Here's a place I use to get parts for TVs:
http://www.shopjimmy.com/catalogsearch/result/index/?q=LC-26D43U&p=1
The problem is the repair shop may charge you double or three times of what the part costs at the web site link above. Then, plus labor. I just want to save you money. :)

Posted on Jun 03, 2009

  • 8457 Answers

SOURCE: Aquos model LC46D64U...approx 2 years old..Won't

I have a Sharp LCD 46 in.tv do this often.Yes,it is.This problems,the tv Tuner signal board have problem,but the tv is still useable.The POWER and OPC light indications flashes.Just push the power switch again,wait see tv turn,not POWER and OPC flashes again,push the power switch agian and wait.Have to do this like 3 or 4 times sometimes,than the tv backlight will come on,tv will work.Don't know but,if u require to pushing power button more 10 or 12 times,the tv Tuner signal board don't take an turn on the tv backlight get the tv to work.The Tuner signal board is dead,time to replaced the tv Tuner signal board.

Posted on Oct 18, 2010

bshldn
  • 736 Answers

SOURCE: TV will not turn on. There are two lights in front

Sounds like your screen is broken or has been impacted. Force the television on by doing this: Unplug it and on the side of the television where the panel buttons are hold down the ch- and vol+ buttons. Then plug in the television while still holding them down. The television should come on and you see the cracks. Unfortunately it can't be repaired.

If it isn't ch- and vol + then try ch + and vol -.

Posted on Feb 05, 2011

  • 99 Answers

SOURCE: I own a Sharp Aquos

there is a problem with the power supply. most likely too much ripple that is ac leaking into the dc. I have seen the power supply repaired but it is not always possible. If there is an obvious swelled capacitor on the power supply that can be replaced this will be the best bet for repair. If there is nothing visually obvious then it gets a little harder since you won't really know which component is not working, the tv shuts down on a protection circuit so if the power supply can be repaired and the voltage "cleaned up" then the tv could work again. I have also seen replacement power supplys sold.

Posted on May 26, 2011

Testimonial: "Thank you for your insight. Much appreciated."

diodeic
  • 1622 Answers

SOURCE: Sharp LC -46SB54U will not

Hello,
Power supply board just die.It can be dead at anytimes.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Do take care.....

Posted on Jun 16, 2011

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