Flat Screen HDTV Has Sound But No Picture – Screen Is Not Cracked




My TV is a 55″ Smart LED/LCD HDTV. Made by Vizio. The TV picture has gone out but sound still works. Screen is NOT cracked. The screen is black. TV powers on. The LED light comes on briefly. Screen sometimes flickers. The screen flickers in a dark room for a split moment. Turning the TV from ON to OFF causes it to flicker white and gray. This is before the sound will come on. I removed the back panel cover and checked the boards. I am not sure what to look for to see if a board or a part on a board is damaged. The sound works. Is there a way to check and see if one of the boards is causing this issue? If I do find the problem, is there somewhere to buy a new board for my TV at a decent price?

Flat Screen TV Has Sound But No PictureFlat Screen TV Has Sound But No Picture

Try a few simple things first to try and fix your TV before replacing parts…
1 – Unplug TV overnight. Plug back in and SOMETIMES it may work and fix your issue.
2 – Unplugging the TV and everything hooked to it, then plugging it back in may clear the problem.
3 – Be sure the TV is set to the correct input. If it is set to DVI or Component input when it should be in the HDMI input this will cause issues.

back of HDTV inputsBack of HDTV inputs – Try another input if no picture







If the 3 quick fix checks above do not resolve your issue, try this:
Press the TV menu button. If no menu appears the problem could be a bad tcon display board or backlight inverter board. Turn off the room light and check TV for backlight glow. If it has a glow then the problem can be a loose tcon connection or bad tcon board. Check connections.

Other possible causes for HDTV with sound but no video…

Possible TV Back-Light Inverter Board Issue:
To see if the back-light has gone out, turn the TV on. Turn the lights off and make the room dark. Shine a flashlight onto the screen at different angles. If you can see some of the picture then the back-light has gone out. (It should glow a slight grey if it’s working) To fix this you need a TV backlight inverter board. You can buy one online for a relatively low price. Usually the board will have a few bad capacitors on it. You could attempt to repair it yourself if you can identify which capacitor has gone bad. A capacitor kit for a TV board is ultra cheap. You are best off buying the backlight inverter board and installing it yourself. A back-light inverter board should be from $10 to $25 dollars depending on your TV model.

backlight inverter boards for TVBack-light Inverter boards for all HDTV’s

Possible Power Supply Board Unit Issue:
If you cannot see the screen at all using the flashlight method, then you may have a bad power supply board or loose wire/connection. If you can still hear the TV sound then it may be the power supply board. If you find the power supply board is bad and you decide to order a new one, make sure the power board part number matches with the one in your TV, there are many different types out there for all TV’s. The power supply board will cost around $20 to $30 dollars. (Replacing the power supply is the last resort as if the sound is working but there is no picture, this is most likely not the issue but on SOME TVs this fixes the problem)

power supply boards for TVsPower Supply Boards for HDTVs







NOTE: On some model TVs the Inverter board and the Power unit board are on one board, so check your TV model number to be sure you are ordering the correct parts.

MORE THINGS TO CONSIDER:
If you have your TV on an HDMI input, the HDMI board may have a bad capacitor. (With this issue there will be no sound as HDMI carries sound as well as picture) If you find the HDMI input is bad, hook your TV another input and order the correct HDMI board in the meantime.

hdmi board for TVHDMI Input Board for TV

Main Board Bad?
You may have a bad main board. There are videos below to help you to determine if you have a bad main board and how to test certain components on any type of circuit board in your TV.

main boards for tvMain Boards for TVs







If you have a Vizio TV, Vizio has a year replacement warranty. If your TV is under a year old contact Vizio or the maker of the TV to see if it is covered by warranty. TV brand links for warranty claims listed by popularity: Samsung, Vizio, LG, Sony, Sharp, Panasonic, Insignia, Toshiba, JVC, Philips, Magnavox, Sanyo, and Emerson. These links will help you to contact the manufacturer to file a warranty claim.


LCD TV Easy Fix (sound but no picture)


TV Has Sound But No Picture Troubleshooting Guide


No Picture LCD TV Repair


How to test Capacitors, Diodes, Rectifiers on TV Power supply using a Multimeter

Test diodes, capacitors, bridge rectifiers in TV power-supply boards, “how to use multimeter”
to test or read TV parts on power circuit boards commonly in LCD, LED, Plasma.







Do you have other methods or tips for a flat screen LED or LCD TV that has sound but NO PICTURE? Please leave a comment below to assist others in solving what may be wrong with their TV as well.


More "Do It Yourself" Tips, Tricks, Ideas, Repair:













{ 21 comments… read them below or add one }

1 John June 11, 2017 at 4:02 pm

Try this it worked for me! 60″ Element flat screen had sound but no picture. Simple Fix ! Unplug power supply hold power button down for 30 seconds while power is unplugged. Reconnect and enjoy you TV again.

Reply

2 Mrs Jones May 30, 2017 at 1:29 am

Samsung LED TV with intermittent issue.
Sound but no picture in any output.
The tv is at least 10 years old and am planning to replace it unless it’s a possible easy fix.
Always happens after set has been off for at least 6 hours or more.

Reply

DIY Project Help Tips 3 DIY Project Help Tips May 30, 2017 at 10:34 pm

Mrs Jones,
What is the model number of your Samsung LED Tv?
-RR

Reply

4 MajorWheat May 12, 2017 at 1:14 am

I have a Sanyo DP50E44 LED LCD TV. It turns on and their are sounds when input is connected but no picture not even the TV menus such as volume. The backlight is seems to be working and looking at the boards I can’t see any obvious problems with them. Thanks for the help.

Reply

5 Tomtom1437 February 22, 2017 at 4:51 am

My TV Philips 55pfl8008s recently have symptoms have sound no pic, when switch on the TV appears screen Philips logo after 2 seconds the TV is blank screen and have sound, use torchlight see the screen.
Have shadowy pic behind the scenes only issue no backlight. What kind of hardware will make the TV become like this?

Reply

6 Kenny Criss January 25, 2017 at 1:31 pm

Thanks for the excellent guidance. It worked!

Reply

7 Tara Davis December 19, 2016 at 11:37 am

My TV did this as well after just 20 months after purchase. I called VIZIO and they told me every size but the 55 inch had been recalled due to this issue.

Reply

8 Mathotho Mokgadi November 1, 2016 at 7:35 am

My Lexuco TV screen turned black but still have sound.
There is a small stripe on the screen.

Reply

DIY Project Help Tips 9 DIY Project Help Tips November 2, 2016 at 9:07 pm

Mathotho Mokgadi,
What direction is the line stripe on the screen and what color is it?
Vertical line or horizontal line?
What is the model number of your Lexuco TV?
-RR

Reply

10 ethalfrida October 17, 2016 at 2:42 am

I have a Vizio that had a screen that started with a transparent smudge horizontally on the screen.
Over months it gradually spread until it took over the whole screen.
Finally, it showed no picture at all and was totally black.
Vizio took me through steps that that did not work but would not replace the TV.
It was 14 months old.
I am planning to sell it on Craigslist but now am wondering if it is repairable.
The sound quality is spectacular.

Reply

DIY Project Help Tips 11 DIY Project Help Tips October 17, 2016 at 11:53 pm

ethalfrida,
If the Vizio TV screen is not cracked or damaged, then there is an issue with a circuit board or a loose ribbon connection.
You will need to troubleshoot to find the problem.
-RR

Reply

12 alexis dorsey September 5, 2016 at 2:17 pm

My GPX TV has no picture and no sound. It still turns on but it has no picture and no sound. What do I do?

Reply

DIY Project Help Tips 13 DIY Project Help Tips September 6, 2016 at 11:04 pm

alexis dorsey,
Most likely a circuit board issue in the TV if the TV turns ON but there is NO picture and NO sound.
Safely open the TV and check for loose ribbon cables, burnt capacitors on boards, etc…
-RR

Reply

14 Dennis Sullivan July 24, 2016 at 2:59 pm

Is this what to expect now for new tvs 2 years and they are junk especially Vizio have two that broke right at 2 year mark definitely will never buy a Vizio again

Reply

15 MR BUMPY July 20, 2016 at 12:42 pm

I have a Samsung 55″ Ln52b750. The screen shuts off after 20 to 30 mins of watching but there is still sound. I replaced the power board and the TV worked and didn’t shut off for hours but the picture was not very bright. I turned up the brightness and then it would flicker and click off. So I then replaced the main board which got me to where it is now, shutting off after 20 min but there is still sound. So then I replaced the t-con board. Same result, shut off after 20 but still sound. I will do the trick you wrote about in checking the back light (with flashlight on screen) Would you have any other tips? Is it time to cut and run?

Reply

DIY Project Help Tips 16 DIY Project Help Tips July 20, 2016 at 9:17 pm

Mr Bumpy,
If you have replaced multiple boards and components in your Samsung TV and you still have “TV Shutting off after 20 or 30 minutes but still has sound”, you need to completely factory reset your TV and disable all power saving options.

HERE IS HOW:

-Get the Samsung Remote
-Go to Menu
-Go to PLUG & PLAY
-Scroll to AUTO PROTECTION TIME and set to OFF
-Press RETURN to exit one level and go to ECO SOLUTION
-Turn Energy Saving to OFF
-Turn AUTO POWER OFF to OFF

It’s those Samsung settings that make the TV turn off sometimes.

Do you use Anynet?
That is a Samsung HDMI-CEC feature. This can sometimes accidentally link to a different device and turn the screen off.
-RR

Reply

17 Mr. Bumpy July 28, 2016 at 11:32 am

I will check those settings again. I had disabled them in the process to this point. I don’t use the Anynet function but will check that too. I did the flashlight test and saw that there was still picture in the background. Got a new/used backlight inverter board and installed it and the TV worked for longer than 20 minutes but it did shut off after say 1 hour. I wonder now based on my situation if it is a bad spot on a board, bad ribbon cable or maybe just tired CFL’s.

Reply

18 Ki-Ho Chung June 24, 2016 at 5:50 pm

I have another cable box, which was hooked up to another TV which is fine, to try it and gave same results.
I tried all four HDMI ports and gave same results.

Reply

DIY Project Help Tips 19 DIY Project Help Tips June 24, 2016 at 9:26 pm

Ki-Ho Chung,
You may have a bad HDMI port(s) as in the wiring that connects the HDMI ports in the TV (inside the TV behind where the HDMI ports are located) may have a wiring issue.
Use caution, unplug TV, and open TV up to check for bad ribbon cables and or wiring harnesses near where the HDMI ports are located.
(Be aware that some components in the TV may still hold voltage, unplug TV and wait a few hours before opening TV up to avoid electric shock)
-RR

Reply

20 Ki-Ho Chung June 23, 2016 at 12:15 pm

I have Samsung TV model # UN46C6300SFXZA. One day suddenly no picture is showing from all sources (all HDMIs, Components) but with sound. Message is “no signal detected”. From TV source it shows horizontal white and black flickering image with message “weak signal” in the center of screen (I have no antenna cause I have cable service). Only image is showing from the source of USB reader with SD card (not CF card). Still it displays all the list of sources.
What is the problem? I will appreciate any help. Thank you very much.

Reply

DIY Project Help Tips 21 DIY Project Help Tips June 24, 2016 at 5:00 pm

Ki-Ho Chung,
If your Samsung TV shows the image perfectly from the SD card, then you know the screen is okay.
You may have a bad coax cable that is causing the NO SIGNAL DETECTED.
Usually WEAK SIGNAL from a cable box may mean the cable is not working or there is an issue with Signal strength.
Or the cable box is OFF, cable box is faulty, etc…
You may want to call your cable company.
Have you tried hooking up another component to the TV either through HDMI or other input to see if you get the same result?
-RR

Reply

Leave a Comment

{ 1 trackback }

Previous post:

Next post: