Question about Westinghouse L1975NW Monitor
You have a monitor with a very common problem, a blown power supply. The heat that builds up in the monitor case causes parts called capacitors to overheat and blow out. When you turn on the monitor they try to hold a charge and show a picture but loose the charge fast and the picture goes dark. If you can solder then you should be able to do the repair yourself. Go to our web site at:
www.ccl-la.com/badcaps.htm and look at the pictures of what the blown capacitors look like. Now open the bad of your monitor and replace any that look like the pictures. The values that you need to purchase will be marked on the sides of the blown ones but will be values like 220uf, 470uf, 1000uf and then a voltage rating. Be sure to get high temp (105c) replacements or you will have to do the repair again in a month or two. The parts at Radio Shack will not do there are several places on the internet to order them from or we can supply you with them. When you install the new ones just insert the caps with the polarity stripe going the same direction as the old ones come out. If you have any questions just let me know. If you don't want to do the repair yourself we do offer a repair service for $35 plus return shipping.
I hope this helps, if so please rate our solution.
Posted on Oct 04, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
I will not use RadioShack caps, since they are not low ESR type which is required for switching power supply, they will not last if you use generic electrolytic caps.
You should remove one cap at a time so you can see what the value is for each cap.
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
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Basic LCD monitor troubleshooting guide:
Failed TV, Monitors, Caps : http://s807.photobucket.com/home/budm/allalbums
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