SOURCE: Sharp R-1450 microwave
This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.
On these, it's usually a broken tab on the upper switch holder.
One test that sometimes helps is to gently lift up (and/or push down) on the door or
handle as you try to start it. If it works or tries to work, then it's
a door switch mount or door alignment issue.
That sounds like what's happening when you hold the Start pad - maybe you're moving the frame and chassis enough to help it work.
Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.
Door
switch or mount trouble can be 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
you or someone you know decide to look into it, we have critical
information on safety, disassembly and door switches at our site, and
our link is at our listing here on FixYa:.
You can probably find exploded views and order parts by entering your model number here at the Sears parts site.
The best place to order Sharp parts is Tritronics.
If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
William E. Miller
[email protected]
http://www.microwavedisplay.com
SOURCE: The microwave oven start button does not work. If
You probably have a bad door switch or door switch mount and should
see these files:
http://www.microwavedisplay.com/safety.txt
http://www.microwavedisplay.com/disassembly.txt
http://www.microwavedisplay.com/doorsw.txt
If it's not the switch or mount, you may need to adjust the door alignment.
If you still need help, to allow us to help you effectively (at no charge), please post a NEW problem to FixYa, and please
include your brand name and the full model number from the tag in or on
the unit, and requote your symptoms, as you posted previously.
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