Question about Sharp R-308J Microwave Oven

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Only the #4 does hasn't worked for some time. This is my 2nd Model R-310J; R209J, R308J. Original purchased from a Home Depot12-4-07 and due to that one being faulty, we exchanged it for same model

Please contact me: Jean Blubaugh; 2575 So. Coleman Rd.; Shepherd, MI 48883 or phone (989)828-6440 or e-mail: Thank you.

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Re: Only the #4 does hasn't worked for some time. This...

Since you posted your contact info, I have sent you direct e-mail on this.

It sounds like it's repairable with our $39.95 service, but you'll have to decide if it's economical for this model.

Posted on Dec 08, 2007

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After pressing start, light goes on but not operating. Senor issue?

I had a similar problem once with an older Kenmore microwave, which at the time, were actually made by LG. After removing the cabinet, there was a small automotive type fuse in a clip-in fuse holder which proved to be "open" after checking it for continuity with a test meter. I replaced the fuse with the EXACT type and rating, and continued to use the oven for several more years until I gave it away. Please note, that microwave ovens are not something that you want to mess around with. Make absolutely certain that you have unplugged it before doing anything. In my case, I suspect the after several years of trouble-free use, the fuse had failed, -likely due to age. In your case, it may be a similar issue, so you might want to see if your microwave oven has a similar replaceable fuse. Beyond that, I would strongly suggest taking it to an approved service facility. Also, NEVER operate the microwave until you have replaced all covers, cabinet, etc. to it's original state.

Nov 12, 2014 | Kenmore Microwave Ovens

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GE Advantiumk 120 - Complete Blackout Model Number: SCA 1001 HSS 01 Brand: GE Age: 1 - 5 years Thanks a lot for your expertise. It's a total blackout mid cook cycle. The house breaker and...

the fuse is located on the control panel which is at the back of the base.and control panel, is located at the top.the fuse is not on the control panel its located on the control will just have to remove the oven.this is the only procedure.but once the unit is removed then its not to tough.the sides are just fitted by replacing the fuse from control board also called main board is very just need to pull the fuse out by a plyer/clipper or with a thin knife.fitting is also easy there is a fuse holder.just keep the fuse on the holder and slowly press the fuse without applying will fit easily.the cost of fuse is near to $ can get it from ------ ------ if the fuse is ok then its time for new main board. you can get the parts from ------------------- this will help.please do rate the solution.thank you for using fixya.keep updated.

Oct 02, 2009 | GE Advantium SCA1001HSS Convection...

1 Answer


Pros: Attractive design, Cooks evenly, Easy to clean, Easy to operate, Lots of options Cons: none Bought this for our last home and loved it. We had to sell it with the house but we are going to purchase it again for our new home. I had a Samsung before and it broke so many times it was declared a lemon so we got this LG and haven't looked back!

Aug 19, 2009 | Microwave Ovens

1 Answer


HI, unfortunately, the actual part you need(Control board), has been discontinued. it is best to just purchase a newer unit in this case. This unit is not repairable at this time due to the unavailability of the components.

Aug 06, 2009 | Whirlpool RMC275PD Microwave Oven

2 Answers

Microwave won't heat

Sorry my Clarification Request came out as a single blob of a paragraph.

That's not how I typed it. I never write that way!

So I've pasted it here, but as a solution.

Magnetrons generally should last about 2000 hours, but several factors can shorten that.

If it's not OVER ten years old (from the purchase date or the date on the tag inside the unit) then the magnetron is still under warranty.

From the owner's manual:

"For the second through the tenth year from the date of original purchase

"The magnetron tube, if the magnetron tube fails due to a defect in materials or workmanship. During this nine-year limited warranty, you will be responsible for any labor or in-home service costs.

"For the above limited warranty: To avoid any trip charges, you must take the microwave oven to a
General Electric Customer Care® servicer and pick it up following service. In-home service is also
available, but you must pay for the service technician’s travel costs to your home."

GE Customer Service is here, and you can verify the warranty status and find your nearest authorized servicer.

If you're sure the magnetron's bad, it's still under warranty, and you or a friend are handy, they will send you the magnetron to do it yourself. Call them at 888-239-6832.

Be persistent. You may have to speak with a supervisor.

It does sound like the magnetron overheated and the magnetron's thermostat opened until it cooled down.

An overheating magnetron can be due to:
  • operating oven without cover(s) in place
  • wrong magnetron installed in oven
  • an old or otherwise failing magnetron
  • cracked magnetron magnet
  • improper power line voltage (should be 110-125VAC)
  • foods low in moisture (popcorn & bacon, e.g. - add 1/2 cup of water in rear oven)
  • failed or inoperable cooling fan or hood vent exhaust fan
  • deteriorating foam weatherstripping seals in air ducts or on outside cover
  • blocked air vents (dust, animal nest debris, insufficient free air space behind & around oven, etc.)
  • clogged or greasy charcoal filter or grease filter
  • blocked duct in hood vent exhaust
Since yours is a counter top model, there are less of those factors to worry about.

When you hit Start to microwave, do the inside light, cooling fan, and turntable all come on?

Any unusual noises? Is it louder or quieter than usual?

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

You can find helpful exploded view diagrams and order parts if needed by entering your full model number from the tag on the oven here.

Let us know what you find out or decide.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Jul 05, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Everything works except heat

this is something you should probably call a repair technician for, due to the danger of the componentry.

Usually in ther case of this problem, even a technician will advise you to replace the unit, in the minds of cost effectiveness and safety...

Mar 21, 2009 | GE JE1540 Microwave Oven

1 Answer

1100 watt diplomat microwave

Please reply back with your brand and model number so we can help you.

Aug 20, 2008 | Microwave Ovens

1 Answer

We have recently purchased a Panasonic Convection Microwave (Model No: NN-CS596S) and have had to return one unit to the place of purchase due to being close to catching fire - thick black smoke inside and...

I would consult your owner's manual. If you don't have yours, you can download one here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Aug 02, 2008 | Panasonic Microwave Ovens

1 Answer

Spacemaker XL Microwave Oven MODEL JVM1640 Help

please check control circuitand related circuit and wiring mains fuse and related circuit

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