I had the same problem with this POS microwave. Bought it September 2019 and the plastic at top is brittle and breaking plus the door latch springs are WAY too stiff for this application. I'm 6'4" and it is hard for me to open and close. The spring tension causes the latches to slam down on the thin edge of the plastic catch causing divot wear. The INCESSANT beeping when food is done is worse than nails on a chalkboard plus there are Way too many levels and button presses to simply soften butter or cream cheese! What a TOTAL mess that I Absolutely regret buying! As for this issue with the blown fuses (on a 20 AMP circuit with nothing else on it); I read about replacing the switches so that is where I started but it didn't work. I noticed the wear in the latch catch so I ordered a replacement and that fixed the problem. I also found a video showing how to remove the door and change the latch. I did not need a new latch, but I did want to replace the spring. I have a box of springs at home and found one that was slightly shorter but the same diameter. It had about half the pull strength and now the door opens and closes reasonably! I hope this helps
I’m wondering if that’s what’s wrong w mine. It blew twice when my kids opened it while it was still going, and then a third time my wife said all power went out when no one was even using it. How did you change the latch catches? Do you have a link for a video for that? TIA
You can get the beeping to stop. Press Clock & Settings till you see volume, then wait (like 10 seconds) till it cycles through and shows 'off'. Right then, hit start
Thanks for the tip on the latch
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It sounds like a dead short somewhere in your wiring. If you've had someone replace a breaker recently they could have used the incorrect amperage size.
Breaker is good. We did have to replace fuse twice in past 6 months before but now it powers up then blows fuse when we try to use microwave
I'm assuming something was going bad causing fuse to blow, and finally gave out.
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SOURCE: Microwave keeps blowing fuse
If it blows the fuse as soon as you hit the START button, it's almost certainly a shorted high-voltage capacitor.
If it blows a few seconds after you hit the START button, it's probably the high-voltage transformer. You'll possibly also smell a faint electrical burning smell from the rear vent after you shut if off.
If it blows the fuse as soon as it's plugged in, you probably have a shorted door switch, a shorted varistor, or an internally exposed wire shorting to the chassis, etc.
SOURCE: Microwave keeps blowing fuse
If it went dead almost immediately after pressing the Start pad, that\'s usually a shorted high-voltage capacitor.
If it went dead a few seconds after pressing the Start pad, that\'s usually a failing high-voltage transformer.
Here are some links with info on part testing:
http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html
You can usually find helpful exploded view diagrams and order parts by
entering your full model number here: http://tinyurl.com/gv383
Please write back with your brand and model number if you need further help.
We\'re happy to help and we appreciate your thoughtful rating of our answer.
SOURCE: microwave blowing fuses
Sanyo isn't that great of a manufacturer.. I had a microwave from them a few years back that did the same thing.. The wiring inside the microwave is shot.. if you were to open it up, you'd probably see some burnt wires from a short. If you use the microwave over a range, it may be because of grease build-up...
anyhow, its better that you invest in a new microwave, rather than fix it. It will be much more cost efficient
SOURCE: keeps blowing fuses
This problem is just like my own microwave, replace the shorted HV capacitor
SOURCE: My Frigidaire fmv156dsb microwave counts down and lights work onl
That would be a bad primary interlock (bottom door switch) or its mount may be, loose, cracked, or misaligned.
We have
the service / repair manual for this model and have uploaded
it to our
site here for free download to help you.
It will
give you safety info, step by step help in disassembly, troubleshooting
tips, and part numbers.
If a switch is all you
need, we offer a universal type for only $5 postpaid which you can
order here.
Even though a door
switch clicks, it may still be bad inside.
Door switch
or mount trouble is usually caused by slamming the door or by opening
the
door while it's cooking without hitting the Stop pad first.
There are
plastic mounts inside the microwave which hold the door switches and
onto which the door latches lock when you close the door.
The screws on these
mounts may be loose. If they get too loose, the switches will not be
activated properly.
Sometimes it's
a broken tab on the switch holder, allowing the switch to rotate just
out of position. This tab
can be hard to see, since it is under the
bottom edge of the switch.
If the switch mount is
broken, it's usually more economical and
safer to add a dab or two of hot glue to the mount to secure the
switch. Let it cool for about 30 minutes before using.
We're happy
to help you with free advice and we'd appreciate your thoughtful rating
of our answer.
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