Samsung 40 inch Led TV has no picture and no sound. Sound was available before the picture went completely black but now both are out completely. Should I replace the Power Board or the main Board.

what type of tv is it is it led

Panel or backlight problem

LG LED TV has no picture (black screen) but still has sound - can ...

www.tomsguide.com/answers/id-2660992/led-picture-black-screen-sound-fixed.html

Feb 9, 2017 - My 32' LG LED TV has suddenly lost picture! The sound is alright but the screen is pitch black. ... Then completely black but with audio. ... I'm really hoping if I do the right research Ican fix this tv for my husband. .... Take the screen off hit power and watch LEDs if any don't flash its LEDs if they all flash its ..

You were looking for "led sound picture". You might be interested in the following threads :

• Vizio LED 50in Tv no picture, but sound - Tech Support
• LG LED TV - sound but picture only visible by looking closely with a torch - Tech Support
• LG LEDLG LED TV has no picture (black screen) but still has sound TV has no picture (black screen) but still has sound - Tech Support
• my 32 inch lg led tv no picture only sound after yesterdays heavy thunder and lightning can it be fixed - Tech Support
• I Have SAMSUNG UA46 F6400 LED 3D TV I want TO CONNECT MY LAPTOP WITH TV WITH HDMI I CAN GET PICTURE BUT NO SOUND PLEASE ANY ON - Tech Support
• See all contents in "led sound picture"

The tcon board or the LCD panel is faulty. You have to replace the TCON board to confim the fault.

If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

LG 42LS5700 - LG.com

www.lg.com > Home > Support > Product Support

LG ElectronicsTV/Audio/Video; TVs; 42LS5700 ... TV Support Landing Page - HDTV/Netcast/webOS 1.0/webOS 2.0 ... Adjusting Picture Settings - webOS 2.0 Video ... quality and convenience of complimentary shipping when buying directly from LG.com. ... Curved TVs · 22 Inch to 29 Inch Class TVs · 32 Inch to 39 Inch Class TVs · 40 Inch ...

Amazon.com: Customer Reviews: LG 42LS5700 42-Inch ...

www.amazon.com/LG-42LS5700-42-Inch.../B006ZH...

Amazon.com, Inc.LG 42LS5700 42-Inch 1080p 120Hz LED-LCD HDTV with Smart TV (2012 Model). byLG. Size: 42-Inch ..... images are nice and crisp when viewing HD content.

Widescreen TV Black Screen - Repair LCD LED PLASMA ...

? 3:41
https://www.youtube.com/watch?v=RbZncfiOXQA
Jul 13, 2011 - Uploaded by FixItUrselfDummy
Fix your tv with black screen blinking light, popping sound noise. ... Watch QueueQueue ... TV Black Screen - Repair LCD LED PLASMA - Problems SONY LG .... I have a 60 inch samsung DPL tv how can I stop the humming or ... What do I do if my tvturns on but its just a black screen so sound no picture?.

LG LED TV has no picture (black screen) but still sound ...

www.tomsguide.com/answers/.../led-picture-black-screen-sound-fixed.ht...

My 32' LG LED TV has suddenly lost picture! The sound is all right but the Screen is pitch black. After switching it on the picture flashes for a second and then the screen goes completely black.

LCD Easy Fix (sound but no picture) - YouTube

? 4:52
https://www.youtube.com/watch?v=IBRE1Dcyxp4
Jan 13, 2012 - Uploaded by Clay Whitehead
TV Has Sound But No Picture Troubleshooting Guide - Duration: 2:30. by Repair.com 472,733 views. 2:30. LG LCD TV REPAIR -NO PICTURE ...

Here is what to check when your TV is turned on, power light is ON, but no picture is seen or sound is heard:

1 - Be sure the component you are using (Xbox, Cable, SAT, ROKU) is turned ON.
2 - Check to be sure all cable and cords are securely connected to the TV inputs and component outputs.
3 - Make sure you are on the correct input as some TV's will show a black screen if there is nothing connected to that input.
4 - Unplug the input you are trying to use from the TV (such as an HDMI Cable) and plug it back in.
5 - Check for signs of damage on all cords and cables from the TV to all components.
6 - Make sure the TV is not in ENERGY SAVE MODE, press the button on the remote control to go back to normal mode.
7 - Unplug the TV for 10 minutes to see if there was a temporary one time issue with the TV.
8 - Disconnect the TV from power for 2 minutes, then when plugging it back in PRESS AND HOLD THE POWER BUTTON ON THE TV FOR 10 to 20 SECONDS to try and force the TV to reset.
9 - If after checking all these different issues, you may have a Faulty Power Supply Board, A Bad Capacitor on the Power Supply Board, Loose Wire Harness, or Loose Ribbon Connector in the TV itself.
10 - Most likely when a TV has the power light ON but NO PICTURE and NO SOUND, it is the Power Supply Board that has failed.

BTW, here are solutions for you to play iTunes movies on Samsung smart TV

it's the inverter. you can get one here. tvtechparts com

I had a problem with a Samsung 46 inch LCD and it had audio and dim light but no picture and found out that the logic board toward the top (inside tv) was bad and was no longer available and the only way to fix it was to get the entire display panel (the logic board came with it) It was not costwise to repair. Hope this helps.