Samsung LE40R74BDX 40 in. LCD Television Logo
Posted on Sep 26, 2009

After about ten minutes the picture goes blank but

Samsung LE40R74BDx . After about ten minutes the picture goes blank but the sound is ok. The tv is about 3 years old

  • khenryashley Sep 30, 2009

    Have phoned local repair shops and one has said the invertor is the problem and he other said its is the psu.
    All want at least £100 labour plus parts.
    I have taken the back off and and removed the psu. Going to replace it myself. Replacement psu £87 online.

×

2 Answers

Anonymous

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

  • Contributor 1 Answer
  • Posted on Nov 30, 2011
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Joined: Nov 29, 2011
Answers
1
Questions
1
Helped
373
Points
2

If you still have the tv, remove the power board and look at the transformer connections. one will be burnt, due to poor quality. check this video, http://www.youtube.com/watch?v=XdsDxKkcesg

Anonymous

Level 1:

An expert who has achieved level 1.

Hot-Shot:

An expert who has answered 20 questions.

Corporal:

An expert that has over 10 points.

Mayor:

An expert whose answer got voted for 2 times.

  • Contributor 30 Answers
  • Posted on Sep 26, 2009
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

Hot-Shot:

An expert who has answered 20 questions.

Corporal:

An expert that has over 10 points.

Mayor:

An expert whose answer got voted for 2 times.

Joined: Sep 21, 2009
Answers
30
Questions
0
Helped
9639
Points
65

It sounds like the main board may have went on the TV. It should be not that costly to replace

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
1answer

I have a 50" Samsung tv. The tv turns on and the screen comes on, then within 1 minute the screen goes black. I can still hear sound.

Samsung HL-R5087W TV screen goes blank -tv/sound on - Forums ...

www.cnet.com > Forums > Samsung

CNETJun 11, 2015 - About a month ago, the at various times the tv screen would go blankeven though the tv ... Try turning off the cable/sat box when the happens. ... In reply to: Samsung SP50L7HX DLP TV linked to Sky HD box - same problem .... on it comesback to normal. however, once it went off again (Black Screen) after only 2-3 minutes. ln-t4069f picture problem lcd warmup - Forums - CNET
Jun 11, 2015
Samsung LCD TV LN-T5265F Black Screen Diagnosis Help ...
Jun 11, 2015
More results from www.cnet.com

TV with Black Blank Screen Repair How to Troubleshoot ...

? 3:16
https://www.youtube.com/watch?v=kFdVi2ejfzA
May 8, 2014 - Uploaded by ShopJimmy.com
TV Repair Help for a TV With a Black No Image on the Screen ...Sign in to add this video to a playlist. ... LCD & LED TV Repair - No Image & Blank Black Screen Flashlight ... Easiest TV repair - How to Fix Power [TV turns off, freezes, or won't ... 1:26.Samsung LED TV Blank Screen & No Backlights Basic ...

Samsung TV screen goes black w/ audio still playing ...

? 1:49
https://www.youtube.com/watch?v=L9cjcsysdW4
Sep 11, 2012 - Uploaded by Roberto Ramos
TV screen begins to flicker then screen turns black while the audio continues to heard. I'm unable to see the TV Menu options when screen turns off. ... After turning the TV OFF then back ON again, the screen will flicker and then ... 1:26. Samsung LEDTV Repair - T-Con Board Replacement - No Picture on ...

0helpful
1answer

2 year old plasma on 5 minutes no pic, but sound

yes take it to a tv tech would be your best bet.

regards
shaun
0helpful
1answer

When powered on with remote,makes usual sound,green light comes on,then goes off,blinks 3 times,goes off and contiuesly blinks until unplugged. Problem is picture suddenly went black with no sound.Could it...

my samsung tv model number is sp50L7hx it's 6 years old, when I turn it on it's a not really nice picture just nice sound, after 2 hours the picture is off just sound .... after I was switch off TV and switch on again ... the picture is very bad and just for a ten-twenty minutes ... what's is the problem? I'm never change the lump ... or is it a some problem with T-Con decoders board or is it a lump?
0helpful
1answer

Dark picture

Hmm my dad's old t.v. just cut out on him it took awile to turn on this my be the end of ur tv so this might be a power problem but older t.v. loose there colour on the screen my uncle had a like 10-15 year old t.v the screen was like green when it was light but when u turned of the light or closed the blind's it's picture was ok so try that.
2helpful
1answer

OUR 40" SAMSUNG LCD TV IS THREE YEARS OLD AND NOW TAKES ABOUT 15 MINUTES TO SWITCH ON EITHER FROM STANDBY OR FROM THE MAINS.

capactors are failing will not turn on at all soon and the light will flash
replace capactors on mains power board easy to do if got soildering iron look for raised tops on capactors ( they look like little battries with line down and numbers on (e.g 20000mf 25v) there is 3-4 that will need changing close together
replace with some value and make sure the line is on same side as ones that you take out TAKE PICTURE FIRST and replace one at once
0helpful
1answer

Screen goes blank for seconds

bad connection, soldering goes old .using soldering iron, locate bad connection and redo them agin
0helpful
3answers
Not finding what you are looking for?

383 views

Ask a Question

Usually answered in minutes!

Top Samsung Televison & Video Experts

Grand Canyon Tech
Grand Canyon Tech

Level 3 Expert

3867 Answers

 Grubhead
Grubhead

Level 3 Expert

5755 Answers

Cindy Wells

Level 3 Expert

6688 Answers

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

Answer questions

Manuals & User Guides

Loading...