Discuss

Waveguide covers?

 in

Microwave Repair

. "

We have this Sharp Carousel microwave and it's about 6 years old. It just started arcing last night, at the

..."
 
 
Register | FAQ's | New Posts | Today's Posts | Extras
Appliance Repair Forum > Appliance Repair Help > Microwave Repair » Waveguide covers?

Post New Thread  Reply By reading any content on this site you agree to AppliancePartsPros.com, Inc. disclaimer and Terms of Use.
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 05-27-2012, 11:16 AM
Junior Member
 
Join Date: May 2012
Posts: 4
Melissa2012B is on a distinguished road
Default Waveguide covers?
Brand: -other-   Age: 5 - 10 years   

Appliance Parts from AppliancePartPros.com


We have this Sharp Carousel microwave and it's about 6 years old. It just started arcing last night, at the place where the microwaves enter the cooking chamber, on the right wall - big yellow flashes and smoke.

I tried cleaning it with a damp paper towel, but it still does it and there's flakes of something that looks like mica, coming off on the paper towel.

So I'm thinking we need a new oven, but not so fast...

I'm a 63 year old electronics technician and was just looking at Amazon.com for new ovens, which cost a LOT ( this is a good sized counter top unit and over 1000 watts if I recall ), and came across waveguide covers, which are only a few bucks each. Can that just be replaced, if I get the model number off the back?

I'm thinking that food may have spattered on it over time and it finally arc'd over.

Reply With Quote
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
  #2 (permalink)  
Old 05-28-2012, 02:13 AM
Senior Expert
APP Volunteer
 
Join Date: Feb 2008
Posts: 17,643
denman is a name known to all
Default

Yes they can be replaced if you can find the correct one.

Some of them just clip in others require taking the unit apart.

As a test I would just remove it and see if it still arcs.
If it requires taking the unit apart I would just carefully cut it and remove it from inside the oven.
This is just for testing, do not run the unit like this.
Try heating up some water with a loose cover do not let it come to a full boil.

If it still arcs then either the magnetron or it's control electronics are bad and I would replace the unit.

If it does not arc then hunt up a replacement and install it.

If you have to take the unit apart be very, very careful.
Many older units do not discharge the high voltage when the unit is off/unplugged so you can get a nasty shock or worse.
__________________
-
Reply With Quote
  #3 (permalink)  
Old 05-28-2012, 10:27 AM
Junior Member
 
Join Date: May 2012
Posts: 4
Melissa2012B is on a distinguished road
Default

I pulled on it some, it seemed loose, so it looked like it would bend a little and pop out from behind the tabs. It did, no problem. I'll go test it without the cover now, as you suggested, thanks!
Reply With Quote
  #4 (permalink)  
Old 05-30-2012, 04:32 PM
Junior Member
 
Join Date: May 2012
Posts: 1
ckajua is on a distinguished road
Lightbulb Waveguide covers?

Last week I started having arching problems on my Sharp Carousel microwave oven. After I placed an order on Amazon.com for a microwave guide cover, I came across this helpful link on Yahoo!:

<< How to Fix a Sparking Microwave Oven
Repairing Your Microwave May Not Be as Hard as You Think >>

It involves thoroughly cleaning the microwave guide and the microwave guide COVER! Here is the link:

How to Fix a Sparking Microwave Oven - Yahoo! Voices - voices.yahoo.com

If it does not open, copy and paste to your browser address box.

I tried the tip and it worked. My Sharp carousel is again operational! I hope this helps.

Last edited by ckajua : 05-30-2012 at 04:38 PM. Reason: Had to add more information and correct typo.
Reply With Quote
  #5 (permalink)  
Old 05-30-2012, 05:24 PM
Junior Member
 
Join Date: May 2012
Posts: 4
Melissa2012B is on a distinguished road
Default

Success! I actually found the correct model number on the label inside the door. Tested the oven per suggestion here, it's fine. Found a mention of which cover was for that oven, on Google, then ordered one on Amazon.com. It's on the way. Thanks guys!
Reply With Quote
  #6 (permalink)  
Old 06-01-2012, 02:31 PM
Junior Member
 
Join Date: May 2012
Posts: 4
Melissa2012B is on a distinguished road
Default

By the way, when I tested it with a cup of water and no waveguide cover, it heated the water some, but not as much as it usually would. Does not having that waveguide cover on there change the microwave distribution ( SWR? ) enough to screw up the power it delivers to the water?
Reply With Quote
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
how to attach waveguide cover vladk111 Microwave Repair 0 02-03-2011 08:53 AM
How to replace waveguide cover judy8336 Microwave Repair 0 09-19-2009 02:59 PM
GE no heat - magnetron? where is waveguide? jperiod Microwave Repair 2 08-20-2009 09:51 PM



All times are GMT -7. The time now is 06:33 AM.

The content on this web site is for informational purposes only and is not intended to replace an on-site diagnosis from a qualified appliance service technician. By reading any content on this site you agree to AppliancePartsPros.com , Inc. disclaimer and Terms of Use.
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17