If you have a Viewsonic VX1962WM monitor that either has a blue power light and no picture (it may even be squealing a bit) then this should help get you back running. Below you will find a full walk thru on repairing your LCD monitor. The power supply board we will be repairing is a Darfon B092-XXX 27-D021625 Rev D2, this board is also used in the Acer P191W and X193W monitors. To do the repair you will need the following tools: Soldering iron, de-solder braid, Phillips screwdriver, flat blade screwdriver. You will also need the following electronic parts: Qty. (2) 220uf 25v capacitors, Qty. (1) 1000uf 10v capacitor and Qty.1 2200uf 25v capacitor. We sell a repair kit with all of the parts for $10.00

If you don’t want to do the repair yourself, use the service request link above. Most monitor repairs run $30-35 plus return shipping.

Here we have a non functional ViewsonicVX1962WM 19″ LCD monitor. This one has a blue power light, no picture and a soft squeal coming from the monitor.

First you need to remove the power cable, signal cable and the stand. To remove the stand pull the plastic cover off and remove the 4 screws.

Now to get to the electronics we will need to separate the .front and back halves of the case. Use a small flat blade screwdriver inserted between the front and back halves. Start on the bottom surface in case you damage the surface. The best place to start is the opposite from the control panel so it does not get damaged. Once you get the separation started just work your way around all 4 sides. About every few inches there will be a plastic latch that will release.

After the back case is separated from the front lay the whole unit on a flat surface with a towel under it to prevent scratches to the display

Next unplug the backlight wires as seen below.

The last cable to release is the panel signal cable as show in the picture below right.

Now flip the electronics assembly over as show. Remove the 4 screws as circled in the picture to the right. With the screws removed the power board will unplug from the driver card and can be fully separated from the rest of the parts.

his is the power supply assembly. The parts we will be replacing are circled in yellow. The parts are as follows:
C1 and C302 are 220uf 25v
C307 is 1000uf 10v
C305 is 2200uf 25v
When replacing the capacitors be sure to install them with the polarity stripe on the side going the same direction as the old one comes out. Usually the board will also have one side marked as positive +, the stripe side is the negative -.

After the parts are replaced just reverse the procedure to reassemble the case. Now apply power and you should have a fully functional monitor again.

22 Comments on Viewsonic VX1962WM Monitor Repair

Carter Olson on Tue, 9th Feb 2010 8:30 pm


I made the repairs you showed above, but could not remember the order in which the wires get attached (ones shown in 5th photo down) when re-assembling. Any help with that would be appreciated.

thanks.

admin on Tue, 9th Feb 2010 9:48 pm


The order that the backlights are plugged in does not matter, all 4 plugs each go to a backlight tube.

cna training on Fri, 19th Feb 2010 2:19 am


Keep posting stuff like this i really like it

Ian Blade on Fri, 5th Mar 2010 6:31 pm


Hi,
I made the repairs as instructed. But now i have no power. The salesperson sold me an 1000uf 16v and said there was no 10v exists. Could this have anything to to do with the no power situation. Any idea?

admin on Fri, 5th Mar 2010 10:17 pm


The capacitors you used are not the correct type. It sounds like you used general purpose caps from someplace like Radio Shack, these will damage the power board. Look on our page called choosing the correct parts above right and it will explain which brands and series you need to use. The general purpose caps you have used are not low ESR and not high ripple current that the power supply needs to function correctly. The salesperson you talked to does not know about electronics repair so they are not familiar with the parts you need. I am sorry that you paid for caps that are not correctbut if you use the correct ones then the repair will work correctly.

Ian Blade on Sat, 6th Mar 2010 5:29 am


Thanks for the info. I’ll be buying one of your repair kits to insure i have the correct capacitors.

Two questions if you don’t mind-
1. Do you have the repair kit for a Westinghouse 17″ model LCM-19v5 – I haven’t taken that one apart yet so i don’t know the model number of the board. Has the same issue as my other one.

2. Do you sell aluminum tape?

Thanks again for the help.

Seth on Fri, 16th Apr 2010 2:20 am


Thank you so much! I was going insane trying to find the specs on the cap at C302 since it was covered in that lovely white glue. I figured it was the same as C1 but wanted to be sure before I ordered some caps.

Thanks again! Hopefully I can fix my Acer X193W now.

Jay M on Wed, 5th May 2010 3:43 pm


Well.. I ordered parts from MCM, and I got the good quality caps. Installed, and now all I get is a steady blinking blue power light.

I triple checked the cap polarities.

The C305 (2200uf 25V) was too large for the board, so I ran some leads and glued it down like the 120uf 400V cap on the other side of the board.

I noticed the newer caps were much larger, but were all electrolytic, and had the exact same capacitance and voltage rating, so they should work, right?

admin on Wed, 5th May 2010 3:55 pm


Hello Jay,

What brand and series capacitors did you use. The replacements need to be High temp which will be marked 105c, LOW ESR and high ripple current. If they are general purpose caps they will not work and could damage the board. here is the link to our page discussing the proper ones to use with brands and series number to use. http://www.ccl-la.com/blog/index.php/capacitors/

CCL_Tech

Leandro on Thu, 20th May 2010 6:07 pm


Thank you so much, man you ar the best ! keep it up

David on Mon, 5th Jul 2010 12:50 pm


I have one of these monitors and don’t want to bother fixing it…does anyone else want it? I have since upgraded to a 22″ Samsung which I love, so I no longer need this one. I know that the only thing wrong with it is the backlight. I am willing to give it to a good home for the cost of shipping it to you (unless you live around Rochester, NY and want to meet me someplace) as it is just taking up space. This monitor is in great shape otherwise, no scratches or dings/dents.

Corey on Tue, 24th Aug 2010 4:26 pm


Just wanted to say thanks for keeping me on my budget! The fix worked like a charm, it was very easy all around. Selling the kit saved me time and aggravation finding the right caps, and the repair took less than an hour. So glad to have this monitor back, it’s my favorite

i63556 on Wed, 8th Jun 2011 5:57 am


Thank you so much for the information. My monior is less than three years old and exhibited a buzzing noise and then went blank but the blue power button remained on. It seemed to degrade over a 2 month period until it finally failed. I followed the repair instructions and R&R’d the Darfon inverter board capacitors, put it back together and it is working great. One issue I did have was that the new 2200 uf capacitor is slightly taller then the old cap so that board doesn’t sit exactly flat anymore. Be careful when you tighten down your four corner screws. I also used a small piece of electrical tape to protect the top of the cap where it touches the case. Make sure you label your connectors and have some aluminm tape handy on reassembly. GREAT INFORMATION!!!!

Jude on Fri, 14th Sep 2012 2:01 pm


I don’t understand as to why all capacitors on the cold side have to be replaced.

Thx.

Jude

CCL_TECH on Fri, 14th Sep 2012 2:25 pm


The all of the capacitors are under the same heat and power stress, the ones you see with bulging tops are just the first to show the damage. If you just replace the ones with visible problems then within a months or two you will have to reopen the unit and change the others when they go out. It is just good technique to replace all of the capacitors on the filter side at one time to prevent future work. Plus not all failed capacitors will show the signs, some can fail and still look perfectly normal. Capxon brand is well know for this.

Frank on Fri, 28th Sep 2012 11:38 am


Oh there was 2 screws holding it. got it. now how do I release that signal cable? very delicate.

CCL_TECH on Sat, 29th Sep 2012 10:30 pm


The cable going to the front control panel should pull straight out of the connector, it is just held in by friction contacts.

Brodie on Wed, 5th Dec 2012 3:16 am


Parts arrived today,
I soldered them in place and screen is working. Took about 20mins.

THANK YOU SO MUCH, Very easy fix

John on Sun, 27th Jan 2013 9:41 am


DO you have the exact model numbers of acceptable capacitors?

Vincent Coen on Mon, 11th Mar 2013 3:22 pm


In order to prevent to prevent damage to the delicate display connector, does the connector pull straight of the board up {vertical) or horizontal back? The whole white part? Any pictures would be helpful.

Thank you,
Vince Coen

Joe on Tue, 2nd Apr 2013 4:43 am


Hi, I Ordered the kit installed it and still have the same problem image comes on then disappears, If I turn it off and on it comes back for a second. Any other ideas I can try?
Thanks Joe

Bill on Thu, 25th Apr 2013 7:59 am


I have a acer AL1912 I was adjusting the resolution from 16 bit to 32 bit and the monitor just went dead power indicator will not work any more any ideas. Note I put a backup monitor on the machine and that works so I know the video card is ok.

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