[TechAssist] Re: [ My next question] Sharp Micro-wave oven - modelR-930AK Won't heat
- From: Kevin <kevintv@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 21 Jun 2004 13:13:30 -0700
I have often been afraid of breaking the plastic tabs as well, but
unless the plastic is old and brittle, they just pop out with the tabs
not breaking. You must have had bad luck that one time.
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of LeRoy Westlund
Sent: Monday, June 21, 2004 9:00 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] [ My next question] Sharp Micro-wave oven - model
R-930AK Won't heat
Jim, and All,
OK,...I found the bottom switch to be defective.
My next question is: How do you guys go about removing the defective
switch,
with out breaking the plastic tabs that hold it in place, and the
plastic
guide that slips into one of the holes on the switch ? Last time I tried
to
replace one of these, I ended up having to drill a hole, and installing
a
screw in the new switch. Is there a SECRET that I don't know about ?
Thanks,
LLW
LeRoy Westlund
Westlund TV & Electronics
97 North Main "Where there's a will,...
Centerfield, UT 84622-0087 There's always a way."
Ph./Fax 435-528-3822
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: becyn <becyn@xxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Friday, June 18, 2004 9:29 AM
Subject: [TechAssist] Re: Sharp Micro-wave oven - model R-930AK Won't
heat
>Leroy,
>
>I took a look at the sheet for this one. It is possible for the mag fan
to
>run independently on this model. If you have no power to the the HV
>transformer primary, then the path to consider is the contacts of Ry1
and
>the primry interlock relay RY2 which is controlled by a door sensing
switch.
>The door sensor is at the top of the stack. I have also seen burned sec
>interlock switches at the bottom. Sometimes they are defective but test
OK
>out of cicuit.
>It's rare that the contoller will be the problem but possible.
>
>Jim McVey
>McVey Alltronix
>327 Broadway
>Newburgh Ny 12550
>ph: 845 561 8383
>fx: 845 561 9017
>Consumer electronics &
>computer service.
>Factory authorized for
>over twenty brands.
>
>
>----- Original Message -----
>From: "LeRoy Westlund" <llw@xxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Thursday, June 17, 2004 9:14 PM
>Subject: [TechAssist] Re: Sharp Micro-wave oven - model R-930AK Won't
heat
>
>
>> The fan runs normal.
>> All 3 of the door switches check good.
>> Maybe the relay is bad.
>> I'll pull the control board and check for bad connections on the
printed
>> ckt.
>>
>> LLW
>>
>> LeRoy Westlund
>> Westlund TV & Electronics
>> 97 North Main "Where there's a
will,...
>> Centerfield, UT 84622-0087 There's always a way."
>> Ph./Fax 435-528-3822
>> mailto:LLW@xxxxxxxxxx
>>
>> -----Original Message-----
>> From: becyn <becyn@xxxxxxxxxx>
>> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
>> Date: Thursday, June 17, 2004 5:38 PM
>> Subject: [TechAssist] Re: Sharp Micro-wave oven - model R-930AK Won't
heat
>>
>>
>> >wow! so much for tips! The thermister is for the the convection
mode. It
>> has
>> >nothing to do with the microwave function!
>> >You probably have a bad lockout microswitch
>> >if the mag fan doesn't run.
>> >
>> >Jim McVey
>> >McVey Alltronix
>> >327 Broadway
>> >Newburgh Ny 12550
>> >ph: 845 561 8383
>> >fx: 845 561 9017
>> >Consumer electronics &
>> >computer service.
>> >Factory authorized for
>> >over twenty brands.
>> >
>> >
>> >----- Original Message -----
>> >From: "LeRoy Westlund" <llw@xxxxxxxxxx>
>> >To: "TechAssist" <techassist@xxxxxxxxxxxxx>
>> >Sent: Thursday, June 17, 2004 6:53 PM
>> >Subject: [TechAssist] Sharp Micro-wave oven - model R-930AK Won't
heat
>> >
>> >
>> >> Hi members,
>> >> This Sharp micro-wave oven won't heat.
>> >> Control panel counts down OK, but has no 115 A/C volts driving the
high
>> >> voltage transformer. The Primary interlock relay RY-2 is not
>activating.
>> >> Also, the turn table does not turn.
>> >> I found a fix in Jeff's Intrepid CD program that said to replace
the
>> >> Temperature thermistor part # FH-HZA041WREO.
>> >> I found the thermistor, but it measures 235K ohm across it. Do you
>think
>> >> that reading is too high ? Shouldn't a good thermistor read much
less
>> then
>> >> that ? Does anyone have one they could measure, to confirm that
this
>part
>> >is
>> >> bad. I hate to order one, if it won't fix the problem.
>> >>
>> >> TIA,
>> >> LLW
>> >>
>> >> LeRoy Westlund
>> >> Westlund TV & Electronics
>> >> 97 North Main "Where there's a
will,...
>> >> Centerfield, UT 84622-0087 There's always a way."
>> >> Ph./Fax 435-528-3822
>> >> mailto:LLW@xxxxxxxxxx
>> >>
>> >>
>> >>
>>
>>>
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