Hi, I have a couple-year-old Sharp Carousel R1480 microwave. The electric
control panel works well. But I have push the door up every time to make the
microwave working. Any one knows the possible reason and how to fix it?
What do you mean by "push the door up"? Does this mean "Push the door
closed"? If so, then it is likely that one of the safety interlock switches
is defective or maladjusted. Most of the older Sharp units had a rough
wiring diagram inside the case showing where the switches and stuff are but
IF YOU ARE NOT QUALIFIED, DO NOT OPEN THE CASE! Doing something stupid
inside a microwave can be lethal.
I'd open it up and look at the door switch. Be careful because there is
a high voltage capacitor. It might just need to be tightened or
replaced. There are several videos on YouTube for troubleshooting
microwaves. I did not see any specific to "Sharp".
I think in the US, 3 such switches are required. They chould be easy
to check the microwave unplugged and the door shut in a way that doesn't
allow the oven to turn on. (You could test that when the oven is plugged
in, but don't forget to unplug it.)
It sounds like a misalighed switch to me. Each switch is mounted with
two screws but there's probably an oblong hole somewhere for each which
allows for some adjusting. The switches are like black, or black and
read, rectangular on all 6 sides, not counting some rounded corners.
Each switch probably has 3 places to attach wires, but only two of them
with wires attached. The wire connectors will have plactic, probably
clear plastic around them, but you can slide the meter probes underneat
that. They will all be close to the door.
The ohmmeter or continuity tester will tell you which switch is still
open when the door is shut. If you loosen one screw a little and, if
need be, the other screw even less, and everything is very quiet, as you
push the switch a trifle closer to the door, you might hear the switch
click when it goes from open to closed. Or maybe not because you're
ear with be as much as a foot away or more.
Use an awl or a nail to outline where each switch is before you start
moving anything. So you can put them back where they were.
Don't mess with the other parts. You don't even need to touch them.
On Thursday, September 25, 2014 4:44:01 PM UTC-5, Terry wrote:
Yes, the interlocks are not for the door being closed...so much as forced c
losed with something (like a towel) jammed on one side. On our Panasonic th
ere is one micro-switch on the top latch and two on the bottom. The one on
the top looked overheated...and when removed it broke in-half. I had one (f
rom repair days) and it is again salvage from the recycler.
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