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My Sharp LC-50LB261U tv screen went black but i still have sound. i replaced t-con board and power supply board and have same problem. can you help?

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I don't have a service manual for that set so I'm only able to help on a limited basis...Have you tried the flashlight test?...if the backlights are out then it could be a backlight driver board if it has one? or defective LEDs. See what you have for voltage going into the panel LED's

Posted on Oct 18, 2017

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Posted on Jan 02, 2017

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SOURCE: sharp LC 42D62U has sound no picture

Most likely the CCFL inverter is bad.

Posted on Oct 10, 2009

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

  • 4 Answers

SOURCE: 50PFP5332D/37 has sound and no picture.

try restting push the menu button in on the side for 5-6 second

Posted on Apr 15, 2010

  • 308 Answers

SOURCE: If my Sharp Aquos 37in LC-40C37U tv needs to be

Blinking light is an error code. Count the blinks before they repeat. Check your manual in the troubleshooting section. If you can't find it, contact a Sharp service center or try and get a service manual. Reset info is also in the user manual but you can't do it if your set doesn't power up. Are you sure about the power board?

Posted on Apr 30, 2010

Testimonial: "Thank you. I will get another board."

bshldn
  • 736 Answers

SOURCE: Ok.... I got a new power supply board and the tv

The pattern of the blinking is a code. If the power light is blinking by itself once per second or thereabouts it could be loose connection to Inverters, reload firmware, Inverter Unit or LCD Panel.

Posted on May 06, 2010

Testimonial: "Thank you. I will let you know how it all works out."

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Hook the Tcon cable back up and do this. With a program running on the TV, shine a flashlight in the screen. If you can't see movement from the program, then the Tcon board is bad. you can get parts from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

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You will get a white screen when you unplug the t-con from the main board. Doing so removes power to the LCD panel. Verify that all of your voltages from the power supply are correct. If they are, I'd look at the t-con board. It sounds like there is a problem with the t-con that is pulling down the main board.

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Sharp lc 32sh20u when power on displays "please wait" and the screen within a split second or 2 disappears to a black screen. THe power light is still green or on. Audio still works. trying touchingthe...


WELL FOLKS I just FINALLY found what I have been searching for, I own a Sharp LC 32SH12U LCD TV that has begun to show problems with it's picture, Now it's sound is great no change..But it has gotten to the point that when i first turn it on all I get are three or four bright WHITE lines on the right side of the screen. They are a bout one third from the very corner of the screen.After it warms up for a while, MOST of the time it will just pop up and go to working just fine, that is what was giving it away to me that it HAD to be a something generally easy to fix, And in all of my searching I FINALLY found what I was looking for..Rite here on FixYA.com...There it was right thre in PLAIN ENGLISH..(( The T-CON BOARD )) Timing Control or LCD Controller..Board. on teh LCD panel Assembly, It transfers the image signal of the TTL and LVDS signal to specific TFT but What you all really NEED TO KNOW is JUST what is going on with your TV set when the T-CON Board is going bad, And I am about to tell you....So her ya go.. If you TV has any of these symptoms Well then I can pretty much say that your T-CON Board is bad or going bad...OK..If you have A Scrambled Picture,LINES,multiple Pictures Color smears, blotches, Rolling Pictures after warm up, Blown Surface mounted Fuse No Picture, Very Dark Screen almost like there is no backlight....Folks if your SHARP LCD TV is doing ANY of thsi then you just may need to replace your T-CON BOARD!!!! Hey it beats buying a new TV RIGHT!!!! GOOD LUCK FOLKS!!!!! I have already bought my replacement T-CON Board, as soon as I get it and install it I will let everyone know how it went!! PLEASE CROSS YOUR FINGER"S AND PRAY THAT THIS WORKS FOR US!!!! Thanks Wade in Eastman Georgia...

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2 Answers

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The power supply board is dead.That the board where the power a/c plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power suply board for the replacement.

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1 Answer

Screen went black while watching, now ony have sound


Look at the venting grills, you should see whit lights inside the set. If not, the backlight inverter board may have gone out or the power supply supplying the power to the inverter board may have gone out. Those are the two places to look first. It may have bad capacitors in the power supply.
http://en.wikipedia.org/wiki/Capacitor_plague

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2 Answers

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Typically if you have a backlight and no video image it's going to be the T-Con board. We do know it's most likely not the powersupply board because the back light comes on. Could also possibly be the main board, but typically the T-con boards are cheaper and I'd say you got a 70% chance that's the issue. Good luck.

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1 Answer

I originally purchased a LC-32SB24U and wound up needing a replacement because there was a black line going accross the top of the screen. Sharp didn't have any of that model so they sent me a LC-32SB21U...


Don't feel bad. You didn't do anything wrong.
They sent you a TV with a bad power supply board for the
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I would call them back and and make them replace the TV.

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