Repairing the Samsung 920N / 920NW monitors

January 17, 2012 by
Filed under: Monitor Repair, Samsung 

In this repair guide we will show you how to dis-assemble the Samsung 920N /920NW monitors and repair a power supply board that has failed. Both the 920N and 920NW use the same power supply board, one has the audio amplifier and the other does not but the power supply is the same. The board is part number ILPI-036 also shown as 79097140 rev A has the audio and rev B does not. If you have one of these monitors with no display, a flashing power light, a wavy picture or it takes a while to show a picture when you first turn it on then this guide will show you how to repair your monitor.If you would prefer to watch a video on this repair it is available HERE.
To complete the repair you will need the following tools:

Phillips screwdriver

Soldering iron

Solder

Desolder braid or desoldering iron

and the capacitors that will need to be changed.

First you will need to remove the power cable and display cable along with the stand. Now lay the monitor down face up and grip the front bezel with both hands and lift it up while slightly twisting it. The plastic latches will pop loose when this happens do the same thing on all four side and then the corners should release. Do not remove the front panel yet, it is still connected to the electronics with a small cable.

Removing the case.

Turn the unit over and remove the back case panel and set it to the side. With the cover off you now will need to remove the cover over the backlight connections as seen circled here:

Remove this cover.

Now you can see the backlight plugs. Unplug all four connections. The small plug has a release clip that needs to be squeezed to release it.

Unplug all four connections.

Next you need to disconnect the signal cable that runs from the control board to the LCD panel as shown circled here. If you hold the two end clips and gently pull it should release and come right off the panel.

Disconnect signle cable.

Now you can unplug the front panel cable. The cable will unplug and the LCD panel can be set to the side until you are finished with the power supply repair.

Front panel cable

Here is the complete electronics assembly after it has been removed from the monitor. Remove the 4 screws shown circled and uplug the power cable going to the control board so that you can remove the power supply board from the chassis.

Remove screws to power supply.

Now we have the power supply board removed and ready to be rebuilt. The capacitors that need to be replaced are shown circled here. If you have rev A of the board you will have parts in the lower right corner of the board, this is the audio amp for the speakers, replacement of these are not needed.

qty(1) 1000uf 25v capacitor

qty(2) 470uf 25v capacitors

qty(1) 1000uf 10v capacitor

qty(3) 47uf 50v capacitors.

Be sure to use good quality low ESR, high ripple current, high temp capacitors or you can damage the power supply board. More information on getting the correct capacitors can be found on our capacitor page.

We sell a repair kit with all of the proper value and size capacitors for $12.00 if you don’t want to worry about getting the correct parts.


This is not guaranteed to solve all problems but in most cases this is the issue with this model.

If you don’t want to do the repair yourself, use the service request link. This monitor repair run $35 plus tax and return shipping.

Be sure to check out our forums section where you can ask questions about this repair or find information about other topics.

The ILPI-036 power supply board

After rebuilding the power supply board with the required capacitors the monitor is back good as new.

Repaired Samsung 920NW monitor


Below is the 3 part video series on the dis-assembly, board repair and reassembly / testing of the Samsung 920n / 920nw.
Part 1: Dis-assembly

Part 2:Power supply board repair

We sell a repair kit with all of the proper value and size capacitors for $12.00 if you don’t want to worry about getting the correct parts.



Part 3:reassembly and testing

If you don’t want to do the repair yourself, use the service request link. This monitor repair run $35 plus tax and return shipping.

Be sure to check out our forums section where you can ask questions about this repair or find information about other topics.

Post a comment below to let us know how your repair went!


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Comments

4 Comments on Repairing the Samsung 920N / 920NW monitors

  1. george brehm on Sun, 24th Feb 2013 4:36 pm
  2. replaced all caps on my 920 nw,still no backlights,looking to replace mosfets U501 U 502,having trouble to locate those,can I use an equivelent number that would suit that power board, would appreciate help.thank you,

  3. Rob G on Fri, 22nd Mar 2013 12:05 am
  4. My issue is the same as one I saw on the 940 monitor section.
    when I first plug it in and turn it on it stays on for about 30 seconds and goes black, the power button stays lit, if I turn it off and back on it goes black in 3 seconds, again and again

  5. Symon on Mon, 4th Nov 2013 9:45 am
  6. Good afternoon , do you ship the repair kit for this to the UK ?
    I have 4 screesn a;; woth the same fault ?

    thanks in advance .

  7. CCL_TECH on Tue, 19th Nov 2013 9:05 am
  8. Yes, We ship worldwide and the kits ship for free.

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