[TechAssist] Re: microwave
- From: "J Silverman" <greentron@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 29 Dec 2003 13:28:52 -0500
I recall seeing some posts on another list about bad connections in the
magnetron base and ways of getting around those.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, December 29, 2003 9:39 AM
Subject: [TechAssist] Re: microwave
> Concur!
>
> 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: <tvservice@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, December 29, 2003 9:37 AM
> Subject: [TechAssist] Re: microwave
>
>
> > 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
> > > > > > >>>
> > > > > > >>>
> > > > > >
> > > > >
> > > >
> > >
> >
>
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