Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!gatech!mcnc!decvax!ima!mirror!frog!john
From: john@frog.UUCP (John Woods)
Newsgroups: sci.electronics
Subject: Re: Microwave Oven Repair
Message-ID: <1963@frog.UUCP>
Date: 17 Sep 89 03:22:00 GMT
References: <10931@fluke.COM> <14551@haddock.ima.isc.com> <10979@fluke.COM> <461@ctycal.UUCP>
Organization: Misanthropes-R-Us
Lines: 21

In article <461@ctycal.UUCP>, ingoldsb@ctycal.COM (Terry Ingoldsby) writes:
> In article <10979@fluke.COM>, inc@tc.fluke.COM (Gary Benson) writes:
> > Apparently the diode was the only part that fried...
> > 19.95 + tax!! sheesh! One guy told me it is about a 1 amp 6 kV PIV part,
> Every microwave oven problem I've ever encountered involved either the
> stack diode going bad, or occasionally the mixer (a little fan blade
> affair that rotates above the cavity) getting stuck.

Check out a recent ARRL Handbook for info about high voltage diodes (and for
some suppliers; "K2AW's Silicon Alley" is fairly well known).

> > the magnetron carries a *10 YEAR* guarantee.
> There is not much inside a magnetron.  I've never heard of one going bad but
> I will ask a friend who works in a repair shop.

You have now:  I had the magnetron in my microwave go bad after 3 MONTHS.  The
filament crapped out.  The replacement has been going strong for a year since,
and will likely continue to do so.  But it does happen.
-- 
John Woods, Charles River Data Systems, Framingham MA 508-626-1101
...!decvax!frog!john, john@frog.UUCP, ...!mit-eddie!jfw, jfw@eddie.mit.edu