Question about Samsung SyncMaster 940MW 19" LCD Monitor

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My lcd tv samsung sycnmaster 940mw, after replacing all capacitors, it works for 2 months but then now im having new problem, when i switch it on, it works for awhile, then picture is disappearing (black out) but audio is there. same problem if im using cable (antenna) or if im using dvd input. would you pls send me any tips whats the cause of this prob. thank you so much.

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Audio comes directly to multimedia LCDs and has nothing to do with display.
Usually, the capacitors are the casue of such blackouts. So, it is recommended that you check the capacitors/ other components such as invertor board and CCFL (lamp), which may be failing or heating up.

Hope it helps! Good Luck!

Posted on Apr 09, 2011


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No enciende samsung 940mw ya le cambie los capacitores y trabajo bien 4 dias

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Dec 09, 2013 | Samsung SyncMaster 940MW 19 in. LCD...

1 Answer

Have sound but no tv picture

That model used the same power supply that the Samsung 940mw uses and when the capacitors go out you get sound but no picture just like you are getting. The repair is easy, you just need to replace the bad capacitors on the power supply board. Here is a link to the repair guide for the 940mw that should help you get your 910 back going, same power supply so the same repair.

I hope this helps.

Jun 24, 2012 | Samsung SyncMaster 910MP 19" LCD Monitor

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I have samsung syncmaster 940mw monitor. The monitor for the most part will not turn on. When the power button is pushed or attempt to turn on with the remote the little green pilot light will blink or...


That is a hell know problem with the 940MW tv/monitors. The power supply has failed because of parts called capacitors have shorted. If you can solder then you should be able to repair your monitor. Here is a link to the repair guide for this issue.

I hope this helps, if so please rate my solution.

Oct 30, 2011 | Samsung SyncMaster 940MW 19" LCD Monitor

1 Answer

On and off switch not working

Hello Michael,

The most common problem with the Samsung 940MW units that don't turn on is a failure of the power supply board. There are parts called capacitors that fail which in turn causes the power supply to not startup correctly so the monitor never powers up. Here is a link to a repair guide that should get you back watching tv and using the monitor in no time.

I hope this helps, if so please rate my solution.

Oct 13, 2011 | Samsung SyncMaster 940MW 19" LCD Monitor

2 Answers

When i go to turn the set on with either the remote or manually it takes a number of attempts


Yes, The problem you are having is caused by a failing power supply with problem capacitors. We have a step by step repair guide posted on our web site at:

Anybody that can solder should be able to do the repair. The repair guide was a full parts list for the repair.

I hope this helps, if so please rate our solution.


Nov 10, 2010 | Samsung SyncMaster 940MW 19" LCD Monitor

2 Answers

Power light was blinking took a long time to turn on, now power light does not blink or go solid and screen does not work


The Samsung SyncMaster 940MW monitor has an issue with the power supply going out. The flashing power light or not turning on are the classic symptoms of this issue. Check out our web site at: This model is on Monitor repair page #2 We have a step by step repair guide posted that will guide to doing the repair yourself. It involves changing a few capacitors on the power supply. If you can solder then you should be able to do the repair yourself. If you don't want to do the repair we do offer a repair service for $35 plus return shipping. If you have any additional questions just let us know at:

I hope this helps, if so please rate our solution.

Corporate Computer

Dec 22, 2009 | Samsung SyncMaster 940MW 19" LCD Monitor

4 Answers


I have two of these, both of which were just dead. The back snaps off after the screws are removed and the power supply board is the small one with heat sinks and a number of vertically mounted electrolytic capacitors (cylindrical, maybe 1/2 inch in diameter, dark plastic covering, aluminum showing at the top). Some of the capacitors were bulged at the top which is always a bad sign. I decided to replace all of the capacitors in the area between the two heat sinks (six of them). The total cost from Digi-Key Electronics was under $9.00 including shipping.
820uF 25V (2)
1000uF 10V (2)
330uF 25V
330uF 10V
Get ones rated for 105 degrees centigrade.

Good as new!

Jul 07, 2008 | Samsung SyncMaster 940MW 19" LCD Monitor

3 Answers

Samsung SyncMaster 940MW will not turn on

There are broken/exploded capacitors on the power plate, it is a 5 Minute job to replace them.

Mar 13, 2008 | Samsung SyncMaster 940MW 19" LCD Monitor

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