Viewsonic VX1962WM Monitor R epair

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1 of 12 2/8/2011 10:07 AM Corporate Computer Tech Support & Repair Guides RSS Feed Comments Home About Service Request Form Tech Support Forums Parts Store Viewsonic VX1962WM Monitor R epair December

1 1 of 12 2/8/ :07 AM Corporate Computer Tech Support & Repair Guides RSS Feed Comments Home About Service Request Form Tech Support Forums Parts Store Viewsonic VX1962WM Monitor R epair December 20, 2009 by admin Filed under: Acer, Monitor Repair, Viewsonic 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-D 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 35v capacitors, Qty. (1) 1000uf 10v capacitor and Qty uf 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.

2 of 12 2/8/2011 10:07 AM First you need to remove the power cable, signal cable and the stand.

front and back halves of the case. Use a small flat blade screwdriver inserted between the front and back halves.

2 2 of 12 2/8/ :07 AM 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.

3 of 12 2/8/2011 10:07 AM After the back case is

3 3 of 12 2/8/ :07 AM 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.

4 of 12 2/8/2011 10:07 AM The last cable to release is the panel signal cable as show

Remove the 4 screws as circled in the picture to the right.

4 4 of 12 2/8/ :07 AM 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.

5 of 12 2/8/2011 10:07 AM his is the power supply assembly. The parts we will be replacing are circled in yellow.

the polarity stripe on the side going the same direction as the old one comes out.

5 5 of 12 2/8/ :07 AM 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 35v 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.

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6 6 of 12 2/8/ :07 AM ShareThis Related posts: Repairing the Acer AL2216W LCD monitor Repairing the Westinghouse LCM-20V5 Repairing the Acer AL2016W monitor How to repair a Optiquest Q19WB monitor Samsung 204B LCD Monitor Repair Tags: 27-D021625, Acer, B092-XXX, capacitors, darfon, monitors, P191W, power supply, repair, Viewsonic, VX1962WM, X193W Comments 12 Comments on Viewsonic VX1962WM Monitor Repair 1. Carter Olson on Tue, 9th Feb :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.

7 7 of 12 2/8/ :07 AM 2. admin on Tue, 9th Feb :48 pm The order that the backlights are plugged in does not matter, all 4 plugs each go to a backlight tube. 3. cna training on Fri, 19th Feb :19 am Keep posting stuff like this i really like it 4. Ian Blade on Fri, 5th Mar :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? 5. admin on Fri, 5th Mar :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. 6. Ian Blade on Sat, 6th Mar :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

8 of 12 2/8/2011 10:07 AM 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. 7.

8 8 of 12 2/8/ :07 AM 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. 7. Seth on Fri, 16th Apr :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. 8. Jay M on Wed, 5th May :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? 9. admin on Wed, 5th May :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. CCL_Tech 10. Leandro on Thu, 20th May :07 pm

9 9 of 12 2/8/ :07 AM Thank you so much, man you ar the best! keep it up 11. David on Mon, 5th Jul :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. 12. Corey on Tue, 24th Aug :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 Tell me what you're thinking... Name (required) Address (required) Website Speak your mind

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Written By: Charlie Mohr

NEC LCD1770NX Capacitor Replacement Replacement of a capacitor on the power supply circuit board. Written By: Charlie Mohr ifixit CC BY-NC-SA www.ifixit.com Page 1 of 14 INTRODUCTION There are many capacitors