Question about Sharp LC Televison & Video

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I am a beginning repairman and I need a service manual for my sharp LC-50LB261U 50 inch tv. It comes on but has no sound or picture.does anyone have any ideas

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  • Sharp Master
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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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ctf1800

Cary Farah

  • 4402 Answers

SOURCE: Toshiba 43A61 - No Picture, no sound

If your set all of a sudden won't come on, e.g., the screen is blank, but the LED on the under the screen next to the on/off switch keeps flashing, then there may be an internal fault on the set that needs to be reset.
To force the reset, try this:

  • Unplug the set and wait a few seconds
  • Replug and see if the video returns
Whenever the set senses an internal fault through its monitoring circuitry, it essentially shuts down the set. The flashing LED provides the indication that a fault has been detected. Removing power to the set resets the monitoring circuitry. When plugged back in, the circuitry again does a check of the system. If it finds that there truly is a problem, then the set is shut down and the LED will again flash. In this case, you need to call a service tech. Most of the time, however, the unplug/replug routine is enough to get the set up and running.

Posted on Dec 11, 2007

circuitworld

Circuit World

  • 335 Answers

SOURCE: sharp aqous lc 37 in tv power no picture,sound

Your control board seem's defective or the inverter board (associated circuits) are bad. This is common in most TFT-LCD Tv's.......

Posted on Dec 01, 2008

Anonymous

  • 1077 Answers

SOURCE: My Sharp TV will only hear sound. No picture or images even from the tv menu setup option. Model# LC-19SB25U. About 1.5 yrs old. Converter box ok.

In most cases, you can reset the TV by leaving it unplugged for 30mins.
If this doesn't work, I believe the circuit board that supplies power to the screen maybe bad. They call this board a backlight inverter board. It would most likely cost more to repair than replace the TV .

Posted on May 27, 2009

Anonymous

  • 1077 Answers

SOURCE: Sharp LC-32SB24U Service manual

Here's one place for you:
http://www.nodevice.com/manual/newmans/upsharp/LC32SB24UPDF/get53755.html

Posted on Sep 04, 2009

budmrtn

Bud Martin

  • 11361 Answers

SOURCE: Sharp lc-32sh12u...no picture

It can be either the LCD panel driver board, or the worst case is bad LCD panel.

Posted on Nov 19, 2009

Testimonial: "Thanks for the response. I found a PWB board, a Power board and an AV board. Would one of these fix the problem?"

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1 Answer

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?


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

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1 Answer

Where can I find a service manual for SHARP LC40LE550U?


Try updating the firmware before repair /replace of parts.

I am sure you would have tried troubleshoot shown on page 38 of the user manual.
http://www.manualslib.com/manual/751149/Sharp-Lc-40le550u.html?page=40 Sharp LC 40LE550U Operation Manual Appendix Troubleshooting

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1 Answer

Power light comes on along with OCP light. No screen or sound. internal switching noises coming from inside the tv


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? 0:50
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1 Answer

Hi, I got a Sharp Tv Model LC-50LE440U,it has back light and sound,can not access menu to select input,how can I tell which board is faulty. Thanks


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. 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/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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1 Answer

Sharp aqous lc 37 in tv power no picture,sound


Your control board seem's defective or the inverter board (associated circuits) are bad. This is common in most TFT-LCD Tv's.......

Nov 30, 2008 | Sharp Aquos LC-37GD6U 37 in. LCD HDTV

2 Answers

Picture Blacks Out, Sounds Stays On


I spoke to several representatives from Sharp and ultimately they are sending a repair person to take care of this problem at no charge. They realize that this is a problem enountered by several people who own this TV. Hopefully, the repair service will be here in the next day or two.

Sep 29, 2008 | Sharp Aquos LC-32D40U Television

1 Answer

Sharp Aquos LC-40C32U


I have the same model TV that is 18 months old. The repairman wanted $365.00 to replace the inverter and update something on it. From what I have seen online, it is mainly just loose screws on the inverter. I called Sharp and they are paying for the repair on the TV

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