[TechAssist] Re: Sharp convection micro blues
- From: gulftech@xxxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 13 Jun 2003 18:38:48 -0500
Tom,
Almost has to be a faulty door switch, or alignment of the switches.
There are usually three switches.
One of the "musts" for microwave repair is a 15A circuit breaker with
clip leads to put across the fuse holder. You can make one out of the
breaker from an old power strip.
I have seen cases where a shorted magnetron will take out a new diode.
With a fluke without external power supply, the diode should read
infinite ohms each way. Add 9V in series and you can test with diode
check.
Ken Smith
Gulf Technical Services
3034 Gulf Breeze Parkway
Gulf Breeze, FL 32563
850-934-8324 (Voice) 850-932-0819 (Fax)
On Fri, 13 Jun 2003 11:51:04 -0400 Don Cohen <bond007d@xxxxxxxxxxx>
writes:
> Tom,
>
> Does it blow when shutting or opening the door, when turning on -
> immediately or after a few seconds, or in some other way? What does
> the fuse look like? Is there a bead of solder coming out one end or
> both? Are there any burn spots or evidence of over heating at fuse
> ends? Is there any kind of an electrical burning smell accompanied
> with the fuse blowing? The fuse clips on this model tend to get
> weak and can't hold the fuse well anymore. Thus it overheats and
> pops the fuse due to internal melting.
>
> Don C.
> DC Electronics
> Shinglehouse, PA
>
>
> At 11:23 AM 6/13/03 -0400, you wrote:
> >Hi
> >I have a sharp micro /convection that is giving me all sorts of
> problems
> >
> >I have replaced
> > 1 power transformer
> >
> > 2 magnetron
> >
> > 3 hv cap and diode
> >
> > 4 door switch
> > It still pulls to many amps and blow the fuse the model
> # is
> >R-7a85
> >
> >Thanks
> >Tom
> >
> >
> >
> >--
> >--
> >Thomas S. Woodward
> >Multimedia Support Technician
> >Master tech 09165 A+
> >Simmons College
> >300 The Fenway
> >Boston Ma. 02115
> >617-521-2764
> >617-893-9226 (Cell)
> >mailto:woodwart@xxxxxxxxxxx
> >
> >
> >
>
>************************************************************************
*****
> >The Tech Address Book:
> >http://www.tech-assist.org/secure/tip/contact.html
> >Add a Repair Tip Here, or Change/Remove your Email Address:
> >http://www.tech-assist.org/secure/tip/main.htm
> >Lost Password:
> >http://www.tech-assist.org and select "Lost your Login Info?".
> >Email Archives:
> >//www.freelists.org/archives/techassist/
>
> Don Cohen
> DC Electronics
> Shinglehouse, PA
>
>
*************************************************************************
****
> The Tech Address Book:
> http://www.tech-assist.org/secure/tip/contact.html
> Add a Repair Tip Here, or Change/Remove your Email Address:
> http://www.tech-assist.org/secure/tip/main.htm
> Lost Password:
> http://www.tech-assist.org and select "Lost your Login Info?".
> Email Archives:
> //www.freelists.org/archives/techassist/
>
________________________________________________________________
The best thing to hit the internet in years - Juno SpeedBand!
Surf the web up to FIVE TIMES FASTER!
Only $14.95/ month - visit www.juno.com to sign up today!
*****************************************************************************
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.html
Add a Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.htm
Lost Password:
http://www.tech-assist.org and select "Lost your Login Info?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
