This is so true! I am now the local expert in fixing computer monitors that failed because
the small capacitors in the switching supply that powers the backlighting have gone bad.
If your monitor has gone dark, take a look inside -- you may find electrolytics that are
swollen up or leaking.
On 2/21/2013 5:58 AM, Manfred Mornhinweg wrote:
With switchers, the most important factor to MTBF are the electrolytic capacitors, and
specially the small ones, not the big filter caps. A great many designers of switching
supplies just don't pay any attention to the pretty low ripple current rating of small
electrolytics, and run them far above their rating!
--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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