Question about Televison & Video

2 Answers

TV works fine for 2 hours, then the screen shuts off. the sound is still on and works fine. I turn it off and then on again and it will go for another 2 hours then cut off again. Didn't see any blown caps on the Power boards. Any ideas?

Posted by on

Ad

2 Answers

  • 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.

  • Master
  • 11,361 Answers

First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Please post back what you find.

Posted on Nov 11, 2010

Ad
  • 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.

  • Master
  • 8,457 Answers

The 1 or 2 long boards call the LCD inverter boards have problems and the cause.These 1 or 2 long LCD inverter boards help the LCD screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those refurbishes 1 or 2 long LCD inverter boards for the replacement.

Posted on Nov 09, 2010

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 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Television picture turns off when warm


To me it sounds like a power supply board problem...some componet is breaking down intermitly ...that is a hard problem to fix, finding the board should be easy, but buying the board, replacing it, and still the posibily it be something else is really difficult..

Apr 20, 2014 | Televison & Video

1 Answer

I have a 32" LCD


Tries tv turn off and turn on again about an hour later,see if the tv do resetting,tv might be back working to normal again.If still have the same problems.The tv have 1 or 2 long boards that call LCD inverter boards.These 1 or 2 long LCD inverter boards are dead.These 1 or 2 long LCD inverter boards are to help the tv LCD screen panel to have a backlight for the LCD screen panel to produced a pictures.Tries websites like Shopjimmy.com,Ebay.com to buy those refurbishes 1 or 2 long LCD inverter board for the replacement.

May 13, 2011 | Televison & Video

1 Answer

I just get a blank screen with no sound or anything when i turn it on


I once had this issue, the solution was hard to find(five hours), but fairly simple. (This works for HDMI cable set up, but I'm not sure concerning AV)
Note: Yes, the solution sounds ridiculous, but for this issue, it works.

1. Unhook your PS3 from the current TV/Computer screen you have it hooked up to.

2. Hook it up to a different TV/Computer screen that you have or a friend may have.

3. Power on the PS3 and it should have a screen and everything and work just fine.

4. Hook it back to your original TV/Computer screen and power on the PS3 and it should work fine there again aswell.

Jan 23, 2011 | Sony Playstation 3 (PS3) Console

1 Answer

Turn on tv, no picture no sound, shined light into screen,nothing


Check your connections and scart leads, take them out and put them in again. It may be a loose lead or maybe a faulty lead, swop them over to see.

Apr 28, 2010 | Olevia LT32HVM 32 in. LCD Television

1 Answer

Blank Screen but sound works on samsung HPS-S5053


Testing by FixYa Staff

Please do not rate this post!

We apologize for any inconvenience.

Jul 14, 2009 | Samsung HP-S5053 Television

1 Answer

Color gets blotchy, then goes screen goes black


The issue is with the color wheel but you have to replace the engine inorder to get one. The cost would exceed the value.

Jan 08, 2009 | Toshiba 46HM95 46" HDTV

1 Answer

Screen Goes Black After About an Hour


Check the power board inside the TV, possible bad capacitors. I just had them replaced on mine.

Sep 21, 2008 | ViewSonic N3251w 32 in. LCD HDTV

1 Answer

When powered off, TV turns on and displays white screen, then shuts off


I ended up exchanging the TV for a new one that works fine.

Sep 12, 2008 | Televison & Video

2 Answers

My TV pictures turns black afetr a few hours but I still can hear sound perfectly!!!


It sounds like your rptv lamp is going out. If this is an older DLP this is most likely the cause. You can get a replacement at www.laptopsforless.com part number BP96-00224J for $151. If the tv is still under warranty, I would have them do it, otherwise replace it yourself. If so here is a link to give you step by step instruction. Please give me a good rating. ;-)

Dec 18, 2007 | Samsung HLN567W 56" Rear Projection HDTV

1 Answer

TV shuts off and red standby/timer lights blinks red until I power the set off. When it shuts down it does so with a very loud snap. When I turn it back on the screen is blue and has light blue...


The most common cause for what you are seeing is a shorted gun in the picture tube. When 2 elements (heater and cathode) of one of the guns inside the neck of the picture tube touch, that gun goes full on and overloads the flyback (high voltage) transformer. If it is in the blue gun, the screen will go bright blue with light blue "retrace" lines in it. The computer senses the overload and shuts the set off. At 2 years old the tech most likely tried removing the short by arcing between the elements. This works sometimes but the short often comes back a few months later. Another attempt at removing the short could be tried, and it might work this time, but it may or may not work for long. The ony other solution is to replace the picture tube but that would cost much more than the set is worth. A qualified tech will be able to tell you if this is the problem in your set.

Aug 21, 2007 | Sony KV-35S36 35" TV

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

Related Topics:

39 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74383 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...