Your magnetron is shot Robert tvservice@xxxxxxxxxxxxx H & H Electronics Inc Dallas, TX ----- Original Message ----- From: "Ed" <edb3@xxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, December 26, 2003 1:34 PM Subject: [TechAssist] Re: microwave > With my hv probe, the ground connected to one of the leads going to the mag > its measuring about 3 kv, which would be -3kv, if the mag is getting > filiment voltage, does that pretty much insure everything is working ok, and > the mag is bad? > Ed Video Pro-Tech Mesa AZ > ----- Original Message ----- > From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Friday, December 26, 2003 12:22 PM > Subject: [TechAssist] Re: microwave > > > > This may be rather unconventional but in such as case I use a TV high > > voltage probe, BUT you must connect the ground lead to the magnetron and > put > > the tip of the probe to the casing (ground) because it is negative DC I am > > measuring to see if the magnetron is getting or not (about -1.5 to -2KV). > If > > so, the magnetron must be bad. You should measure infinite resistance from > > the filament to the body of the magnetron so I don't see how you can > measure > > an open on the magnetron (except between the filaments). > > > > Bob Waterman, CET® #RI-28 > > Master Technician License #9109 > > Service Manager / Parts Manager > > Gemini Computer, TV, & Security Alarms > > (508)695-7302 > > (508)695-7769 FAX > > geminitv@xxxxxxxxxxxxxxxx > > geminitv@xxxxxxx > > www.geminicomputertvsecurityalarms.com > > > > > > ----- Original Message ----- > > From: "Ed" <edb3@xxxxxxx> > > To: <techassist@xxxxxxxxxxxxx> > > Sent: Friday, December 26, 2003 2:04 PM > > Subject: [TechAssist] Re: microwave > > > > > > > Cant seem to find a reason for this thing not to heat, unless the mag is > > > bad, i can measure continuity across the mag term, its not open, or > > > shorted.wiring seems to be ok, door switches are working, the hv cap > > checks > > > ok, so does the diode, hope someone has a idea. How much voltage should > > > there be at the magnatron filiment terminals? The hv xformer isnt > shorted, > > > and the windings are not open > > > Ed Video Pro-Tech Mesa AZ > > > ----- Original Message ----- > > > From: "Doug Keller" <dek@xxxxxxxxxxxxxx> > > > To: <techassist@xxxxxxxxxxxxx> > > > Sent: Friday, December 26, 2003 8:32 AM > > > Subject: [TechAssist] Re: microwave > > > > > > > > > > May be a thermal sensor problem. Check them and also verify that the > > > > airflow can get through the fins of the magnetron and help it to cool. > > > > > > > > Doug Keller > > > > Wis-Kel Electronics > > > > 101 Freeland Ave. > > > > Terra Alta, WV > > > > USA 26764 > > > > dek@xxxxxxxxxxxxxx > > > > http://www.tech-assist.org > > > > "Learn from the mistakes of others, because you > > > > won't live long enough to make them all yourself" > > > > > > > > > > > > > > > > Ed wrote: > > > > > > > > >Really havent checked anything yet, have never workedon one, just > > wanted > > > to > > > > >get some ideas. I will pull it down later today, heated up a cup of > > > coffee > > > > >and it worked fine, the next cup it wouldnt heat, everything else is > > > running > > > > >ok. Does the magnatron usually go that fast? > > > > > Ed Video Pro-Tech > > > > > Mesa AZ > > > > >----- Original Message ----- > > > > >From: "Doug Keller" <dek@xxxxxxxxxxxxxx> > > > > >To: <techassist@xxxxxxxxxxxxx> > > > > >Sent: Friday, December 26, 2003 7:49 AM > > > > >Subject: [TechAssist] Re: microwave > > > > > > > > > > > > > > > > > > > > > > > > >>fuse?, power to trans?, HV? magnetron? What have you checked so far? > > > > >> > > > > >>Doug Keller > > > > >>Wis-Kel Electronics > > > > >>101 Freeland Ave. > > > > >>Terra Alta, WV > > > > >>USA 26764 > > > > >>dek@xxxxxxxxxxxxxx > > > > >>http://www.tech-assist.org > > > > >>"Learn from the mistakes of others, because you > > > > >>won't live long enough to make them all yourself" > > > > >> > > > > >> > > > > >> > > > > >>Ed wrote: > > > > >> > > > > >> > > > > >> > > > > >>>anyone here experianced on microwave ovens? This is a GE over the > > stove > > > > >>> > > > > >>> > > > > >type, quit heating this morning. Maybe there are some common failures > i > > > > >should look for, its a 1998 model GE, model JVM1450WA > > > > > > > > > > > > > > >>> Ed Video Pro-Tech > > > > >>> Mesa AZ > > > > >>> > > > > >>> > > > > > > > > > > >>************************************************************************** > > > * > > > > >> > > > > >> > > > > >** > > > > > > > > > > > > > > >>>Lost Password: > > > > >>>http://www.tech-assist.org and select "Login Problems?". > > > > >>>Email Archives: > > > > >>>//www.freelists.org/archives/techassist/ > > > > >>> > > > > >>> > > > > >>> > > > > >>> > > > > >>> > > > > >>> > > > > >>> > > > > > > > > > > >*************************************************************************** > > > * > > > > >* > > > > > > > > > > > > > > >>Lost Password: > > > > >>http://www.tech-assist.org and select "Login Problems?". > > > > >>Email Archives: > > > > >>//www.freelists.org/archives/techassist/ > > > > >> > > > > >> > > > > >> > > > > > > > > > > > > > > > > > > > > >*************************************************************************** > > > ** > > > > >Lost Password: > > > > >http://www.tech-assist.org and select "Login Problems?". > > > > >Email Archives: > > > > >//www.freelists.org/archives/techassist/ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > **************************************************************************** > > > * > > > > Lost Password: > > > > http://www.tech-assist.org and select "Login Problems?". > > > > Email Archives: > > > > //www.freelists.org/archives/techassist/ > > > > > > > > > > > > > > > > **************************************************************************** > > * > > > Lost Password: > > > http://www.tech-assist.org and select "Login Problems?". > > > Email Archives: > > > //www.freelists.org/archives/techassist/ > > > > > > > > **************************************************************************** > * > > Lost Password: > > http://www.tech-assist.org and select "Login Problems?". > > Email Archives: > > //www.freelists.org/archives/techassist/ > > > > > **************************************************************************** * > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > ***************************************************************************** Lost Password: http://www.tech-assist.org and select "Login Problems?". 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