🚀 go-pugleaf

In article <1992Aug31.174845.14095@cbfsb.cb.att.com> wa2ise@cbnewsb.cb.att.com (robert.f.casey) writes:
>Just replaced a DC-DC converter module in a RCA VCR, model VLT260
>(made by Hitachi, I think).  The old one burned out, and the new one
>gets awfully hot, a bit too hot to touch.  Can't find any overloads
>on the outputs, voltages correct.  Before I installed the new one, I
>used some bench power supplies to supply the voltages that this
>thing generates, and didn't see any seemingly exeessive current demand.
>Other power handeling parts of this VCR also run hot, so maybe this
>module getting hot is normal?  If so, than i'd call it marginal
>design.  I stuck a heat sink on the module to try to cool it some.
>Anyone have experence with this or similar VCRs?

  I've got a VKT385 (about 6 years old), and I've blown >TWO< of the
DC-DC converters. One of 'em actually burst into flames. It runs a >LOT<
cooler now -- replace the 100mf caps around it. The DC-DC converter
should have come with a little blurb that tells you to do so. Also make
sure you replace the "circuit protection fuse." The new DC-DC converters
come with heatsinks glued on the top.

-Dave
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Kappa Xi Kappa - Over & Above!                         dcg5662@hertz.njit.edu
9 Sussex Ave., Newark, NJ (car theft capital USA)   70721.2222@compuserve.com