[TechAssist] Re: Microwave Panasonic M#NN-C980B, Intermittent unit shut down.
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 02 Feb 2004 09:49:47 -0500
Yep, Hydro is our Electrical Power company (hydro electric power
stemming from Niagara Falls originally but now is mostly nuclear).
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
Old Damon wrote:
>
> I would suspect a switch, possibly "just on the edge" of making a good
> connection. Could be a relay also.
>
> Now I don't know diddly about "having your hydro checked" or the "load is
> refused" kinda stuff going on up there in Canada.....but those microwave
> ovens are no different up there, than down here in the US. I hope your
> "hydro" doesn't mean the Niagara Falls Canadian Power Supply System is
> "LOW". Last time I looked it was working.
>
> ----- Original Message -----
> From: "Taylors Electronics" <taylorselectronics@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, February 01, 2004 9:41 AM
> Subject: [TechAssist] Microwave Panasonic M#NN-C980B, Intermittent unit shut
> down.
>
> > Microwave Panasonic M#NN-C980B, Intermittent unit shut down.
> > This is a mw/convection unit still under warranty.
> > Cust. (friend) has had this unit in for warranty repair 4 times and each
> > time no fault found.
> > Unit has been tested, circuit boards soldered, tap test given to check for
> > microphonics.
> > The unit performs flawlessly.
> > Cust. takes the unit home and after a few uses it fails.
> > He has had his hydro checked, outlet checked etc.
> > As a friend I bench tested the unit at my shop and after several tests the
> > unit failed.
> > The unit fails in m/w mode only.
> > This unit will operate most of the time but then will shut down after 2-3
> > sec's.
> > It appears that as soon as the magnetron is energized the load is refused
> > and the unit stops.
> > All other functions remain normal.
> > Once shut down generally the unit will stay in this fault mode for some
> > time.
> > I suspect noise affecting the microprocessor, I have checked for grounding
> > etc.
> > Anyone have the answer to this one, obviously Panasonic doesn't.
> >
> > Thanks in advance
> >
> > Taylor's Electronics (Tom Taylor)
> > PO Box 854
> > 218 Van Buren Street
> > Kemptville, Ontario, Canada, K0G-1J0
> > Tel/Fax 613-258-0960
> > Email: taylorselectronics@xxxxxxxxxxx
> >
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