Microwave stopped working with no warning. They had a recall on this model and since they ordered two parts it has not worked right

The magnetron is the main part that gives out microwaves to heat the food. As the convection bit is working this points towards the microwave bits.
The magnetron has a main diode, fuse and transformer to run the microwave bit, any of these could be faulty. A word of warning though, there are extremely high voltages inside microwaves, even when unplugged in the main capacitor. Also to repair this section you will need to be a fully qualified engineer to even order parts for this.
Find a microwave technician who can repair for you

It may be a blown fuse or thermostat / TCO / thermal cutout.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

I will never buy another GE product because of this microwave they should have been recalled

The PCOR30 microwaves are essentially a rebranded Sharp R-1870-series ovens.

This is a problem in one of the damper-related components, either the switch or motor or the damper door may be binding.

The damper is a door inside that opens or closes depending on cooking mode. If the controller senses that the door is not in the right position, it will shut down the cook cycle.

Sharp models stop after 59 seconds.

See the attached sample drawing for a typical damper assembly.

The service manuals that cover these models are here:

http://www.microwavedisplay.com/r1874_sm.pdf
http://www.microwavedisplay.com/r1870_r1871_sm.pdf
http://www.microwavedisplay.com/r1850_r1851_sm.pdf

The above manuals will not have Sharp part numbers, not the Dacor part numbers, but they should work, and you can order them from the Sears Parts Direct site.

But if you're leery or unsure, you can look up the Dacor part numbers in the part list here, then order by part number from the Pros here.

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

Does it make any noise, like buzzing ? Is there a burnt smell? If so it might be a shorted diode or perhaps the magnetron.

Sadly, we hear of this over and over.

This is usually due to a defective or loose magnetron causing electrical interference and disruption in the control circuit board.

If your magnetron was recently replaced, it may have loose mounting nuts or bolts or maybe the wire mesh RF gasket was not installed or got pinched.

It may also need a new high-voltage diode and stirrer, and the cavity may be affected.

GE had a campaign (but not a recall, mind you!) covering several models.

Details are in their bulletin at http://207.234.249.73/mwd/ge_mw_mag_kit_bulletin.pdf

Even if your model is not on the list, the same problem can occur, requiring a kit. I just think the difference is that GE has stopped paying for the repairs.

The parts kit (that GE used to pay for) is part # WB27X10489 and is shown here: http://207.234.249.73/mwd/wb27x10489_ge_mag_stir_kit.jpg

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

There should also be a very helpful "mini-manual" hidden inside the unit behind the control panel. It's very helpful when troubleshooting.

You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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

Seems like I've answered this before, but the MR5493G is subject to a recall due to defective keypad (membrane switch) and can be seriously dangerous.

See: www.allworldauto.com/recalls/samsung_microwave_mr5493g_recalls_1420-10455-1.html

The MR1032BB is also under recall. See: www.motorbeat.com/model/samsung+microwave/mr1032bb/

If neither is covered under the recall, you should be able to order new keypads here: http://www.samsungparts.com/search/search.asp

If not, we'd be happy to help you. You'll find a link to our site in our listing here on FixYa: http://tinyurl.com/yzjozk

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

Chances are your keypad has failed.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

If yours is not found there, please reply back with your brand and model.

If you don;t prefer to repair it yourself we can help.

You may have a bad keypad, which in many cases can be replaced.

 

A bad keypad may be worn out due to age, damaged, or it may have gotten wet or otherwise contaminated.

 

Moisture and contamination can be caused by not using the fan when boiling on the stove top (for over the range models), direct spraying of cleaners, by storing the microwave in an unheated garage or shed, or infestation.

 

I warn my customers to never spray cleaner directly onto the microwave keypad, since the liquid can get inside and "lock up" or even ruin the keypad or controller.

 

You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383

A bad keypad may be worn out due to age, damaged, or it may have gotten wet or otherwise contaminated. Moisture and contamination can be caused by not using the hood fan when boiling on the stove top, spraying of cleaners, by storing the microwave in an unheated garage or shed, or infestation. I warn my customers to never spray cleaner directly onto the microwave keypad, since the liquid can get inside and "lock up" or even ruin the keypad or controller. Apply an alcohol-based cleaner (such as the purple kind) to a cloth (since paper towels can scratch) and gently wipe it off. I suggest to my customers that they NEVER use any ammonia-based cleaner (like the blue stuff) on a microwave, since the ammonia will crack and distort polycarbonate plastics. If you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://tinyurl.com/gv383