Question about Televison & Video

Open Question

Our Samsung LA40N81BD LCD TV is not showing any picture and is turning itself on and off. What is the problem? We have tried turning it off at the wall but no success.

Posted by on

6 Suggested Answers

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.
the service is completely free 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

freetek
  • 5568 Answers

SOURCE: Samsung LCD 40 Sensor & picture problem.

Since this is affecting several functions, the problem is likely the main power supply. It may be that the supply itself is failing (switched mode power supplies like hari-kari) or an assembly (possibly the backlight invertor) is producing a fault condition which is causing the supply to drop out to protect itself.
Try the instructions below -
The supply is normally built on a separate board since these are often out-sourced by set manufacturers.

Unplug your set overnight to allow potentially hazardous voltages to discharge, remove the back panel of the set so you can see the guts.
Look for a smaller board with larger parts on it; some cylindrical (capacitors), others block-like and relatively large (chokes and transformers).
You should also see a relationship between the board and the incoming AC.
Check the board for a label or if not present, a stamped-on number.
Call the manufacturer's service center with your TV model number and the number found on that board and inquire about repair/replacement costs; if both are offered, they won't be that much different.
If you must buy a new board, don't dispose of the failed one as there are smaller companies that can repair it for less than the mfr. and then keep it as a spare as this problem will likely arise again.

Posted on Sep 10, 2009

  • 1 Answer

SOURCE: lcd tv no picture

I took mine back and they replaced it! Problem solved!

Posted on Jan 12, 2008

SOURCE: Samsung LE40R51B no picture but turns on

i have the same problem i was told by a repairman that samsungs are known for bad psu. and that its expensive to repair

Posted on Feb 05, 2008

  • 98 Answers

SOURCE: My samsung TV won't show any picture/sound.

When the TV is on, need to check the back light is on(go back side & look into through)

If the back light is on -- need to exchange the Main Board
no back light -- exchange the Power Board --- 95%
exchange the LCD panel --- 5%(inverter)

Posted on Feb 06, 2009

  • 257 Answers

SOURCE: Samsung lnr238w (23'') LCD TV has sound but no picture.

You got sound meaning the power supply and mainboard have no problem at all. Look at the back, have you seen back light lit up?
If there is light, the problem may come from T-con board.
If there is no light so the inverter board has defective.

Posted on Aug 14, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

What do you think is wrong with my television, it has sound but no picture. How can I fix the problem?


Hi there
I would go to menu on the remote , from there to picture go down the list, if you do not find anything there to help you. Go to Support and to the E manual .
26053790-x3zeawgeewbvgdzeyuixqaom-4-0.jpeg Kolbrun

Jan 14, 2016 | Samsung LN52C530 52" LCD TV

1 Answer

Recently i replaced eeproms in lcd's la40r81bd & la40n81bd, i can get into service mode but do not have the data to set it up correctly. can you help with correct data, thanks in anticipation.


Out of curiosity why did you replace the eeproms?

In my opinion only good solution to the problem would be to get an image from a working eeprom and burn it in the replacement.

Manually setting up data sucks.

Sep 25, 2011 | Samsung LA40R81BDX 40 in. LCD TV

1 Answer

Samsung hcm4216W turned off by itself loops.


Instead of typing model number of your TV (that located on right hand side and on the back of TV) you published here part number of your TV's remote control. LOL.
Anyway... If it is LCD/plasma panel that you talking about - than power supply have bad electrolytic capacitors that have to be replaced. You can recognize 'em by bulged/swollen tops (instead of flat tops of good capacitors).
This repair required soldering skills.

Mar 09, 2010 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Samsung T.V. goes on for 30 seconds then no picture


If this is a flat panel LCD tv, this is a sure sign that the panel itself is bad. I have seen this before. Tv comes on works fine then within 5 minutes goes blank.

Aug 07, 2009 | Samsung HL-P5063W 50" Rear Projection HDTV

1 Answer

Samsung LCD tv - Turns on and off by itself.


Since you have another TV with the same problem you can try using an antenna(indoor model ok) to see if the cable is causing the problem. If not return TV before the warranty expires.

Mar 03, 2009 | Samsung LN46A850 LCD TV

3 Answers

My samsung TV won't show any picture/sound.


When the TV is on, need to check the back light is on(go back side & look into through)

If the back light is on -- need to exchange the Main Board
no back light -- exchange the Power Board --- 95%
exchange the LCD panel --- 5%(inverter)

Jan 31, 2009 | Televison & Video

1 Answer

Samsung 1080p turns itself off


Probably a bad Inverter board. I have a Dell 32" LCD TV but it has a Samsung Panel inside, found a burnt transformer on the inverter board, Still trying to find a replacement.


My TV comes on for a second then goes black, power still shows on but no picture. 1.5 years old

If you are not a tech person, take it in for service.

Dec 27, 2007 | Samsung HL-R5678W 56" Television

2 Answers

Samsung lcd tv le32r8


perchè quando collego il computer al televisore l' audio è assente?

Oct 15, 2007 | Samsung LN-R409D 40 in. LCD Television

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

Related Topics:

158 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74106 Answers

Cindy Wells

Level 3 Expert

5099 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...