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I have a sharp TV that has a "black" screen. it has sound and you can see the screen using the flashlight test. what board do i need ?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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gopakumarg43
  • 76115 Answers

SOURCE: lg led tv backlight

Fault with 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.

Posted on Feb 05, 2015

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phil_hick883
  • 917 Answers

SOURCE: How can I get my backlights to work on Samsung LCD tv

If your not a TV Engineer , get one to look at it , as you may keep changing the incorrect part.

Posted on Mar 14, 2015

hichbiri
  • 3469 Answers

SOURCE: Watching tv and screen just went black. I can still hear sound but no picture at all.

backlight may have gone if your tv has one

Posted on Jul 18, 2015

hichbiri
  • 3469 Answers

SOURCE: RCA LED HDTV SCREEN went black while watching tv. Still has sound.

please see your other post for response

Posted on Jul 18, 2015

  • 2337 Answers

SOURCE: I got a sony bravia tv (model#KDL-40S4100 serial#1030160)The screens black but sound works. I see the menu with a flashlight. I changed inverter boards but it didnt help. What could/should I do next?

Hi Matt,
Have you measured if the inverter boards are getting power from the power supply?
Since you've replaced the inverter boards and still no backlight then there is a defective CCFL tube. This type of repair is a bit more difficult because of where these lights are located.

Posted on Sep 19, 2015

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1 Answer

Lcd tv screen goes black after a few seconds but sound still plays. The flashlight test will show the image for a short period of time but then it goes away and is completely black.


Hello... It sounds like you have a backlight failure, and the image going away during the flashlight test is due to the TV going into "Protection" mode. A service technician may be able to go into the service menu and clear the lamp error codes and get the TV working, or it may need the backlights replaced. I hope this helps...

Nov 17, 2017 | Sharp Televison & Video

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

Oct 18, 2017 | Sharp Televison & Video

3 Answers

I have an LG 47LN522-UB LED TV that stopped working after three years and need help diagnosing a problem with it.


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Apr 26, 2017 | LG Televison & Video

1 Answer

I have sound but no picture on my Sharp Aquos tv.


Do a flashlight test on the screen. With the TV on shine a flashlight on it and look for a dim picture. If you see it, the ballast board for the backlights is bad. If you don't see any movement, the T-Con board is bad. You can get parts from here and fix it yourself. TV Parts Universal TV Stands DLP Chips ShopJimmy

Oct 25, 2016 | Sharp Televison & Video

1 Answer

When testin a power supply or led board on tv do i test dc or ac with multimeter?


Your power supply board is working if you get audio and imgaes.

You test AC only the AC side of the transformer before the Rectifier Diodes. Everything after the Diodes will be in DC.

did you get to see any spec of backlight as shown in
LCD LED TV Repair No Image Blank Black Screen Flashlight Test How to Fix...

Mar 23, 2016 | Televison & Video

1 Answer

How do i test a backlight for a led tv


Testing TV Backlight LEDs - YouTube

? 4:44
https://www.youtube.com/watch?v=eEJoPCa7Kt0
Jan 24, 2015 - Uploaded by swappart.com
... explaining easy way to test individual LEDs on a strip from aTV backlight. ... Sharp LC-60LE820UN TV - LED Strip Testing - Long Version ...

IT02 - How to Test LED Backlight - YouTube

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https://www.youtube.com/watch?v=YmSI2N6BGPA
May 20, 2011 - Uploaded by LCDPARTS
How to use IT02 to test Laptop screen LED backlight.

LST04-TV, How to test LED TV screen - YouTube





Dec 26, 2015 | LG Televison & Video

1 Answer

Model no. 32A33M LCD sharp tv, 32 inch, of serial no. 804734030. no picture shown. only sound is coming. i can decresing/increasing the volume. what can be the problem .


Do a flashlight test. With the TV on and a program is playing, shine a flashlight on the screen. Can you see movement in the picture? If yes then the backlight drivers are not working. If NOT, then the T-con board is bad You can get parts from here : TV Parts Universal TV Stands DLP Chips ShopJimmy

Jul 09, 2014 | Sharp LC-32A33M LCD TV

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