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I have a hisense tv Model # LTDN42V77US I have sound but no picture. When I check for backlight, I can see some for only a couple of seconds, then they go out. Is that my problem? (backlight)

Posted by Stan Roberts on


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City View TV & Computer, Inc.

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It is a common problem for the Hisense TV, the problem is defective back lights ASSY, you need to find the burned, or shorted LED diodes on the defective strips & replaced it (them).

Posted on Nov 01, 2017


5 Related Answers


  • 106 Answers

SOURCE: lcd tv backlight prob

You need to replace the inverter board if you can find the spare part. Otherwise you need to replace the whole lcd panel.

Posted on Jan 01, 2008



  • 105 Answers

SOURCE: Has sound,picture only comes on for a couple seconds at start up.

This is a Backlight Bulb or Inverter (power supply for backlight) failure.
If in warranty, take it to service
You can try to order an Inverter, or if needed you can get a replacement bulb (not easily available)

Posted on May 18, 2009


  • 1 Answer

SOURCE: Hisense TV No picture only Sound

I have the same problem...please assist

Posted on May 10, 2010


Bud Martin

  • 11361 Answers

SOURCE: Toshiba 22LV505 TV-DVD:

Check the DC filter caps in the power supply first. Check the 24vdc (or 18vdc for this 22" model) to see if it goes away when the screen goes black.
There are main AC fuse, backlight inverter fuses, T-CON fuses.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:


Posted on Jul 08, 2010


David Duncan

  • 760 Answers

SOURCE: My hisense 50 inch lcd tv has picture but no sound.

If you still have back light, then the T-con is probably defective. If you don't have back light, then you either have a bad power board/inverter or a defective panel

Posted on Mar 20, 2013

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Tv has sound but no picture

Check the backlight circuitry

I need a remote for a Hisense Tv, model : EN-31201A.


I have a ltdn42v77us tv when I plug in the wiring harness to power supply board it lights momentarily and then shuts off.

Fault at its main digital 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. In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

My hisense led LCD TV has no picture but has good sound . Did flashlight test. It has no backlighting. If i replace the main board would that likely solve the problem? Model is 50K20DG.

Don't waste any money on this poor quality TV. The backlight is not working and can't be easily replaced without a new LCD panel, which is too expensive a repair. Stick to reputable brands/manufacturers when buying TVs.

What is the usb port for on side of my tv? Hisense lcd hdmi tv, Product ltdn42v77us

I use mine to charge my phone sometimes , also its for viewing media from the phone on the TV

I have no volume on my 47 inch hisense tv. can I use the remote to fixi it

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in the settings the tv can be set to internal speakers or ext or both

No picture hisense flat screen LCD tv

Sounds like a main board fault. Contact any service technician to make it confirm. If you wish to get some details, check the site linked here. Pull up older posts. Check the site in 'Mosaic' view. It will make search easy.

Black screen but i do have sound

HelloCheck the backlight inverter board. If it has damged, most common fault to LCD TVs, there will be no backlight to the LCD screen, and will look black. Your tV has sound output without picture. This means that all other boards ar functioning well. Check the backlight inverter section and CCFL tubes used in backlight assembly. OK.

What does it mean when the picture goes out?

There are so many reasons for picture to gets out. The first amoung them, is of its backlight itself. If the backlight CCFL tubes wont light up, there will be no backlight to illuminate the picture. If baclkight inverter board has damaged, backlight CCFL lamps won't light up. The most common fault with LCD TVs are backlight failure itself. The second one is of with its main video processor board. In short, main board itself. You have to check and make sure which one is faulty. You must ahve sound knoledge in electronics to proceed. OK.
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