Question about Sharp R-510HW Microwave Oven
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Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
Microwave Oven Basic Troubleshooting Tips
Posted on Sep 10, 2010
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Posted on Jan 02, 2017
Models R420D and R520D also have this common feature found on Sharp microwaves. You can download that manual free at the link below (not my link) and the section on Compu Defrost should help you just fine. http://www.htsarebates.com/files/mic_man_420,520D.pdf#search=%22sharp%20compu%20defrost%20filetype%3Apdf%22 Or you can just do the Google search below and you'll end up with a list of several manuals you can try: "sharp compu defrost filetype:pdf" (without the quotes)
Posted on Sep 21, 2006
Manufacturers used to include access panels in the rear or side so you could easily change the bulb. That exposed the customer to 110V connectors, and that posed a real liability threat, so they stopped using them.
You now must generally remove the outer cover to replace the bulb.
The service manual (available at our site) shows how and shows that the lamp is mounted in the air duct near the magnetron. See http://www.microwavedisplay.com/r510hk_hw_sm.pdf
Part # is RLMPTA086WRZZ and you should be able to get that generically locally but if not, you can get it form Tritronics at http://www.wehaveparts.com
If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk
Posted on Nov 22, 2007
A microwave can be dead for many reasons.
The fuse is normally located on the floor of the chassis behind the control panel or between the door switches.
If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.
If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.
Then when it cools, it closes the circuit and allows power through again.
When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.
If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.
If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.
If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.
You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.
If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.
If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Jun 23, 2008
if you google the model number and the brand you should be listed with a series of sites that supply manuals, service manuals, etc.
Posted on Aug 16, 2009
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