Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!wuarchive!uunet!sci34hub!cdthq!gary From: gary@cdthq (gary) Newsgroups: comp.os.cpm Subject: Re: kaypro II kaput Keywords: kaypro Message-ID: Date: 2 Sep 90 01:05:48 GMT References: <1990Aug29.143642.648@DRD.Com> Organization: Garys' Home for Obselete Computers Lines: 16 mike@DRD.Com (Mike Rovak) writes: > synchrods!daniel@janus.Berkeley.EDU (Dan Senderowicz) wrote: > } My old kaypro II just died of old age. The cpu board works but > first thing I would do would be to try to find an exact replacement tube > from an electronics parts place, assuming that a voltmeter says that your > filament voltage and high voltage are still intact. Note that measuring the high voltage on a tube requires a special HV meter. You're trying to test something in the area of 8-9KV here, at very low current levels. Do NOT try to measure it with your average VOM; it's not designed for it. FYI, a color tubes' HV is generally 20KV or higher. Don't poke around with it unless you have the proper tools and someone standing by to shut off power in emergencies. Gary Heston, at home....