Question about Samsung SyncMaster 940MW 19" LCD Monitor

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Samsung Synchmaster 940MW - Will no longer power up.

There's only two circuit boards inside - power and main board. I think the power board is shot. Couple of electrolytic capacitors look to be swollen, leaking. Is there a place where I can buy a new module or get this one repaired?

Thanks a bunch!!

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  • eaglejj Dec 06, 2008

    my samsung synchmaster 940mw will no longer power up

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  • Samsung Master
  • 1,684 Answers

Hello,

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: www.ccl-la.com 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: tech@ccl-la.com

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

Buddy
Corporate Computer
www.ccl-la.com

Posted on Jan 19, 2010

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Posted on Jan 02, 2017

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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/
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Hi, I need schematic diagram for IP-48135 T board....


Hello,

The schematic diagram is going to be very hard to get. We do repairs on this model. What information do you need? The most common problem is the capacitors on the power board. You can find this repair guide at: http://www.ccl-la.com/blog/index.php/repairing-the-samsung-940mw-lcd-tv/ If you need other information then let us know at: tech@ccl-la.com and we will get glad to assist you in the repair.

CCL_Tech
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www.ccl-la.com

May 21, 2010 | Samsung SyncMaster 940MW 19" LCD Monitor

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Wont power up,!help


This 2006 model, and more likely to have bad caps by now, please see picture here to see what goes bad in SAMSUNG and other monitors just as well: http://s807.photobucket.com/home/budm/allalbums
Post back what you find inside.

Apr 02, 2010 | Samsung SyncMaster 940MW 19" LCD Monitor

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Hello,

The slow startup is a common indication of a failure in the power supply board as the other experts have stated. We have a step by step repair guide posted on our web site at: http://www.ccl-la.com/blog/index.php/repairing-the-samsung-940mw-lcd-tv/ Our article has pictures and instructions to guide you thru the dis-assembly and repair of the power board. You should be able to do it if you can solder. Check it out and see. If you don't want to do the repair we do offer a repair service for this unit that runs $35 plus shipping.

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

Buddy
Corporate Computer
www.ccl-la.com

Apr 01, 2010 | Samsung SyncMaster 940MW 19" LCD Monitor

2 Answers

Hi My Syncmaster 940MW LCD,is cutting out and switching itself off after 10mins or so. Also some times it takes a few presses of the on/off switch to turn it on at all?Can anyone advise please


Power supply board is dead.Replaced the power supply board should solved this problems.Tries Websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for replacement.

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Most likely it is a set of bad caps on the power board. If you are okay at soldering to do the following with the unit unplugged:
Remove the back cover:
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  • Remove the 3 screws along the bottom of the back plate
  • Use a small flat blade screwdriver or plastic wedge (less risk of damage with wedge) to press on the release tabs around the sides.
  • When removing the cover make note of the antennae connection since you will have to work around this

Remove metal cover over circuit boards:
  • Remove 8 (if I remember correctly)screws securing the metal case. Do not remove the screws securing the LCD panel to the frame

Inspect the power board:
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Here's a picture of 4 bad caps on a 940mw. Once I replaced the caps the panel works great and had the same issue as yours.
880af76.jpg

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Well thats not promising is it

A wild guess here is that the optrics board has failed. If you take the back off can you smell burned electrics. look on the circuit to see if you can detect burn or browned capacitors. Depending on age and value of the set it might be time to replace it.

Please rate our help to keep the FREE service online ++++

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