Question about Sharp R-1470 Microwave Oven

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Which is a wiser choice. To buy a microwave with a 1 year warranty or one with a 1 year limited warranty and a 5 year limited magnatron warranty? Thanks

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I would buy the microwave oven that has the one year warranty because it covers your purchase 100% If you buy one with a one limited warranty you need to read the fine print what it does not cover, and the magnetron with a five year limited warranty sounds good but has restrictions on the actual coverage, meaning they can refuse the claim by saying it does not meet the criteria, because the "claus limited" has been put into place and is misleading.

Posted on Mar 27, 2011


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Power works, everything seems normal but no heat

microwave ovens do not produce heat, they produce microwaves. the heat comes from whatever is excited by the microwaves. In your case i would bet that the magnatron (microwave tube) has become defective. If this oven is less than 5 years old, the magnatron may be under warranty. depending on the model it may be repaired at no cost to you. In the case of Kenmore (Sears) you would take the oven to their customer service dept and they will send it in for you for evauation. they will charge you $50.00 US this amount will be applied to the repair if you choose to have it fixed. If the Magnatron is bad and is under warranty, they will fix it, and return it to you along with a refund of you $50.00.

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Sounds like the magnatron is shot. This is the main heart of the oven, the magnetron is what creats the Micro waves to heat the food. You might want to find out what it cost to get this replaced and then decide wheter the cost of fixing yours is greater than replacment of the oven. Christmas time is here and Microwave ovens are usually cheaper this time of year. This unit might have a fuse to the magnatron, you can remove the cover after you UNPLUG the machine and see if there are any replaceble fuses inside the cabinet. If this has any years and lots of use on it, I would simply repalce it. You get a warranty with a new oven and someplaces let you choice a replacement type warranty.

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1 Answer

Everything else seems to work fine but when I take

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Both are replaceable, but the microwave will have to be taken down to gain access to these parts to be serviced.
Now, depending on the age of the unit, it may not be wise to invest the cost for this repair, unless, is it still under the manufactures 1 year warranty or did you purchase an extended service contract on this unit?
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1 Answer

The microwave would appear to be working - light is on, makes a noise like when it was fully operational, timer counts down but when food is removed it is stone cold

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It's most likely the magnatron. If it sounds good it's not the switches, transformer or diode. If you still have the book for it, a lot of magnatrons are covered under warranty for 5 years. Unless it's a real nice microwave, it's usually going to cost $100 for a mag and nowdays it's almost cheaper to get a new one. Good luck

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1 Answer

Hi, I have a big over-the-range GE microwave installed in my kitchen near my prep sink, not over a range. After I had it for 2 years, I received a letter from GE that there was a problem with the...

Microwaves usually have several years' warranty on the magnetron itself - such as 5 to 9 years!

I would call the GE Answer Center with your model and serial number and ask them how many years the magnetron is covered under warranty.

Also ask them for the numbers of a few local GE-authorized warranty service centers.

(GE Answer Center® 1-800-626-2005 Open Monday 6 a.m. ET through Saturday midnight ET)

If the mag is still covered, and you take it to a GE-authorized warranty service center, you'd not have to pay for the magnetron.

And taking it to the shop will indeed save you a lot of money.

If you decide to remove it from the wall, the installation instructions will be very handy to have. If you don't have them, you can find them online here.

Good luck and be safe!

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET

May 28, 2008 | Microwave Ovens

1 Answer

Power surge

The high-voltage transformer being overloaded by something shorting it out. Either the magnatron or the high-voltage capacitor and diode. Replace the capacitor and diode then if still not working, replace the magnatron. The magnatron is only affordable to do it yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

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