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Sherif Soliman Posted on Sep 02, 2020
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I have Sharp Liquid Crystal 70" TV model#LC-70LE650U. When I turn on my TV after few minutes start losing the sound with long beep and the screen start flickering.

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  • Sharp Master 76,851 Answers
  • Posted on Nov 09, 2020
The Knight
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Joined: Oct 14, 2010
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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

5 Related Answers

Anonymous

  • 3130 Answers
  • Posted on Jun 20, 2007

SOURCE: Sharp LC37G4U Liquid Crystal Flat Screen

If this also happens on a DVD or video recorder, you could have a power supply issue or maybe a problem with the back light circuit. The best advice would be to take the TV back where you purchased it, if it is new. If it is not a new set, take the TV set to a repair shop for an estimate. Good Luck

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Anonymous

  • 152 Answers
  • Posted on Oct 20, 2009

SOURCE: Is the Sharp LC-22DV17UT (combination liquid

That TV/combo unit does have a VGA port, so it should be detected as a standard monitor from the G5 at 1366x768 resolution. I'd definitely try to upgrade the G5 to Leopard if it isn't detecting - Leopard has far better monitor support than Panther or Tiger did...

bshldn

Loretta Northcutt

  • 736 Answers
  • Posted on May 20, 2010

SOURCE: LC-32SB24U 32 in. LCD TV: need the liquid crystal display for tv...

It is in stock at MCM Electronics for $867.64

http://www.mcmelectronics.com/product/DISTRIBUTED-BY-MCM-/R1LK315T3GW30Z

Anonymous

  • 1 Answer
  • Posted on Sep 01, 2010

SOURCE: My LC-26sh12u takes 10 minutes to

I had a similar problem where it displays "PLEASE WAIT" for several seconds alternating with blocky colors for several seconds and continuing anywhere from 5 to 30 minutes.

I inferred from a couple of sources that the TV is booting up when it says "please wait" by reading data from flash memory. I was able to fix my problem by resetting the data in memory to factory default values using this procedure from the service manual (wait until the TV is working before trying this):

Turn on the POWER.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
After the finishing of the initializing of shipping, the unit will turn off automatically

Anonymous

  • 14553 Answers
  • Posted on May 29, 2012

SOURCE: TAKING OFF CLOSED CAPTION WITH OUT REMOTE SHARP LIQUID CRYSTAL TV # LC-32SB24U

not possible but note if using a cable box it can also be coming from that.

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I have a sharp aquos lc-70le650u, will not turn on, power light flashes rapidly 2 times then 5 times

I'm not sure about this one since I never worked on 1 of them.. But I did find a link that you can check on. http://www.badcaps.net/forum/showthread.php?t=41773. Good luck on it
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sounds like youve had a pic tube go out,,probly just one and the other 2 are still good,,thats why it came bck on,,take it to a tv shop ,know ,,want be that much if its just one pic tube,,good luck
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Sharp LC37G4U Liquid Crystal Flat Screen

If this also happens on a DVD or video recorder, you could have a power supply issue or maybe a problem with the back light circuit. The best advice would be to take the TV back where you purchased it, if it is new. If it is not a new set, take the TV set to a repair shop for an estimate. Good Luck
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