I have a JVM1190WY001 convection/ .The WB6X63 rubber belt is stretched out really not doing anything. This part is discontinued and NLA so my questions are; what function does this best

This appears to be an Australian model and these are the only spares I can find. They do sell the latches. If the hinges are damaged and causing this, you will feel movement. Looks like it is time for a new one.

https://spares.bigwarehouse.com.au/index.php?cPath=46427_53341_57047

https://www.google.com/search?q=sharp+R-9X56+replacement+hinges

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Convection needs fan drive to force the air into the oven cavity. The fan may be direct motor drive or belt driven. If the latter the belt may be broken or simply have stretched and come off.
Before removing the cover of the oven in attempt to carry out any maintenance such as replacing the Oven cavity lamp, make sure the oven is disconnected from the power point ! The voltages in a microwave oven ARE LETHAL !

1.1 cu ft

http://products.geappliances.com/ApplProducts/Dispatcher?REQUEST=SpecPage&Sku=JVM1190WY

Try Retrevo Manuals.com

Remove the bottom cover to the oven and check to see if a rubber belt exists, if so it may have stretched and may be slipping. Replace the belt if one exists.

Hi,

Discontinue useing that as it is no longer safe to use and that is not repairable...

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101

Hello, I looked around my shop and checked all of my used doors and have nothing. I know you already know this, but it may be time to replace the unit. Once you get the plastic starting to crack or break it just keeps going, and what NLA part will it be next? It is expensive and a real pain in the backside. but you would have better future part availability and full warranties on a new unit. I understand it is different and trying to get something to match the kitchen and all can be frustrating. But the cost of new units have come down considerably. Whereever you may get a new one they probably have their own installers too. .

Yes.

In convection mode, you can use anything that's oven safe. Anything you would use in a regular baking oven in other words.

There's a very interesting and helpful article on convection cooking here, and you can find more tips here.

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

Look on the internet auction sites (ebay etc)

There is quite a trade in them. Make sure match the dimensions of yours before purchase.