That may be what happened. I also can see that if the cooling fan died, that fuse would overheat and blow.
------------- Max Charleston SC On Wed, Jun 7, 2017 at 5:51 PM, Dan Penoff via Mercedes < mercedes@okiebenz.com> wrote: > From what (little) I know about microwave oven operation, the cavity fuse > is there to fail in the event of an extended operation with nothing in the > cavity. > > -D > > > > On Jun 7, 2017, at 5:48 PM, Meade Dillon via Mercedes < > mercedes@okiebenz.com> wrote: > > > > I suppose, but none of the other components / wiring has the same issue. > > Maybe the QC for those connections was faulty, and resistance from bad > > connections caused heat to build up? Maybe someone (daughter unit?) ran > > the micro with nothing inside and the fuse actually died from heat, which > > burned up the wiring a bit before the fuse blew? > > > > ------------- > > Max > > Charleston SC > > > > On Wed, Jun 7, 2017 at 5:36 PM, Dan Penoff via Mercedes < > > mercedes@okiebenz.com> wrote: > > > >> Is it possible the burned/discolored wiring is a result of high current > >> being applied to the circuit on a regular basis over a long period of > time? > >> > >> -D > >> > >> > >>> On Jun 7, 2017, at 5:35 PM, Fred Moir via Mercedes < > >> mercedes@okiebenz.com> wrote: > >>> > >>> Max. > >>> > >>> High voltage rectifier? > >>> > >>> (It's been a while). > >>> > >>> Fred > >>> > >>> > >>> Fred Moir. > >>> Lynn MA. > >>> Diesel preferred. > >>> > >>> > >>> ________________________________ > >>> From: Mercedes <mercedes-boun...@okiebenz.com> on behalf of Meade > >> Dillon via Mercedes <mercedes@okiebenz.com> > >>> Sent: 07 June 2017 17:29 > >>> To: Mercedes > >>> Cc: Meade Dillon > >>> Subject: [MBZ] OT Microwave Repair (again) > >>> > >>> Dieselvolk, > >>> > >>> I've got a dead Whirlpool microwave, part of a built-in-the-wall oven > and > >>> microwave combined, which is expensive to replace compare to repairing > >> the > >>> microwave (I'd have to replace both, for at least $1500 or more). > >>> > >>> One of the temperature fuses is blown. On a 24 year-old microwave, I > am > >>> tempted to chalk this up to an age related failure, but what is giving > me > >>> pause is that the burned / melted wires at the connectors to the fuse. > >> It > >>> doesn't make sense to me for there to be burned wires if the fuse > simply > >>> died of old age. This fuse, the cavity temperature fuse, is inline > >> between > >>> an identical magnetron temperature fuse and the 20 amp monitor fuse. > >>> Neither of those fuses has any signs of burning / melting or > overheating. > >>> > >>> I've tested door interlock switches and the monitor switch, no problems > >>> there. Magnetron and high voltage transformer pass all tests. > >>> > >>> I guess my question is about the burned / melted wires at the dead > fuse, > >>> and does that sound normal if the fuse just aged out, or should I keep > >>> looking for a deeper problem. I'm going to order three new fuses > (about > >>> $11 each). > >>> ------------- > >>> Max > >>> Charleston SC > >>> _______________________________________ > >>> http://www.okiebenz.com > >>> > >>> To search list archives http://www.okiebenz.com/archive/ > >>> > >>> To Unsubscribe or change delivery options go to: > >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >>> > >>> > >> > >> > >> _______________________________________ > >> http://www.okiebenz.com > >> > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > >> > > _______________________________________ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
