>
>I have a L4B power supply what is basically new and has not been used for
>many, many years.
>I have not turned it on yet and I would like to ask the group how to tackle
>this one.
>Thanks Will, K6NDV
>
? Will -- >20 yr. old electrolytics tend to loose C. I would inspect
the pressure vents on the caps (white feculence =s replace all), measure
each cap's C, measure the R of each cap. equalizer resistor, and start
off on the low V/CW tap. If needed, Digikey sells Panasonic/Matsushita
105 deg C 470uF, 450wv electrolytics. They are not an exact cosmetic
bolt-in replacement for the orig. 85 deg. C capacitors, however, they
undoubtedly are electrically superior. . . Mounting with rtv silicone
rubber sealant puts minimal stress on the case.
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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