Question about Televison & Video

1 Answer

How to self troubleshooot backlight that comes on momentarily then shuts off

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Televison & ... Master
  • 6,694 Answers

Back - light problem. 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://electro-medical.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.

Posted on Dec 16, 2016

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Is there a feedback circuit that is shutting down the high voltage power supply?


Back - light problem. 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://electro-medical.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.

May 11, 2016 | Samsung LN46C630 TV

1 Answer

Having same problem where TV standby light comes on and logo appears momentarily then TV does not come on fully (backlight it on slightly).


Hello
You have to troubleshoot from its backlight inverter board itself. That is the first possible cause tho this fault to LCD TVs. If backlight inverter board have shorted inverter transormer [wnding short], the inverter board will take tremendous current from power supply, and this can lead to a momentory logo display and then shut down. The second possiblility is with its main digital board. In both cases, the respective board should be replaced as card basis, as there is no repair to these boards.

Feb 23, 2012 | LG 32LH2000 32 in. HDTV-Ready LCD TV

1 Answer

Black screen , red standby light flashing 4x repeatedly, unplug it and the green light comes on momentarily then resorts to 4 red flashing lighrts again. Sony KDL-40V2500 approx. 4yrs old. HDMI cables are...


Hi,
4 blinks indicated of backlight malfunction. The unit shutsdown to avoid overload to the inverter board.
Check the backlights, busted backlight has a physical indication of fault like blackened end, crack end. You must replaced the busted one and your unit will back to normal operation again.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

May 16, 2011 | Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

1 Answer

Monitor is blank. comes on momentarily when i reboot but goes back blank


The problem can be the backlight inverter circuits, bad caps in the power supply, or bad lamps. I would inspect the caps first, look for caps with bulging tops, see example of failed monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums

Mar 12, 2010 | Liquid Video L17LCD2 17" Flat Panel LCD...

2 Answers

Turn TV on. Turns self off. After many times, if picture comes on, Tv seems OK. All ready paid $350 to fix once 14 months ago.


Hi,

Having in mind that a generic lamp will give you 4500 to 6500 lamp hours and the Phillips will give you 6000 to 8000 lamp hours, For what you discribe above the could be your problem, I did some research and you can find the best price for lamps http://www.discount-merchant.com/?click=52978 and they have free troubleshoooting

Regards

Nov 18, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

I same problem


The lights inside the LCD screen are connected in series, if one fails the screen will light momentarily and then shutdown.
What's the LCD model number?

Sep 28, 2009 | Televison & Video

1 Answer

Video shows up momentarily then disappears audio works fine westinghouse flat panel


This is a backlight or inverter (power supply for backlight) failure.

These parts may be availble. The backlights are difficult to replace. If not careful, you will break the LCD Material of the LCD Panel when replacing backlights

May 04, 2009 | Westinghouse SK-32H240S Television

1 Answer

Compaq V2000 Display blacks out


sounds like the backlight has gone....test with an external monitor....if the external monitor works without any problems...the backlight has gone...better to get a professional to do this as its kind of fiddly and involves taking the screen apart

Dec 22, 2008 | HP Compaq Presario V2000 Notebook

1 Answer

When i boot up my desktop the monitor comes on then goes off, it come back on momentarily when windows starts up and then goes off again. i can turn the monitor power off then on again and it comes on for...


Your backlight might be dead. Try using a flashlight to see if you can see a screen
when it turns black. If you can, its a backlight problem. What model of screen do you have?

Oct 25, 2008 | Computers & Internet

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

23 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74377 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...