How to clean microwave turn table

I'd spray the turntable with Krud Kutter, a proprietary cleaner/degreaser, you can purchase at Ace Hardware stores and then allow it to soak in a white vinegar and water solution. The vinegar and water solution should remove any leftover cleaning product and has a mild bleaching action as well as dissipate old grease smells. I'm intensely cheap when it comes to commercially made cleaning products (normally if ammonia, elbow grease, vinegar or baking soda won't clean something...I use more elbow grease, LOL) but I discovered Krud Kutter when ordering supplies for multiple dwellings and IMO it's worth every penny.

HTH!

If it is glass, something isn't making sense about the glass being yellowed. Is it a build up that can't be scrapped or chipped off?

Try WD40 or Goof Off with a steel wool pad.

Cold oven spray should work also if build up is the problem. I'm not a big fan of the stuff, but glass is impervious to anything like that..

I guess I will have to get some Krud Kutter or oven cleaner. I have been scrubbing on it with a steel pad and it's a little better but not what I want it to be. Believe it or not I'm pretty sure the yellow is on the underside which is a textured glass. I did Google first but I wouldn't have known about Krud Kutter if the kind person on here hadn't told me about it. Thank you.

Before buying more cleaners, mix several tablespoons of baking soda and a few drops of dish soap into just enough hot water to soak the plate in your sink. let it sit, the longer the better.

if it is cooked on grease, you need an alkaline solution to break it down. baking soda is the most mild, moving up to ammonia based cleaners and straight ammonia and lastly lye / sodium hydroxide (nasty stuff.)

edit:
oh one more thing to add, if the previous owner microwaved enough greasy food to coat the turn table with an impenetrable layer of it, chances are the same greasy coating is built up inside the microwave too, places that can't be cleaned like the magnetron tube, the cooling fan, etc. microwaves are cheap - might be worth considering a new one.

I realize this is a wild idea, but maybe the glass is colored?

Thanks Gordon for your comments. Replacing the microwave is an option we have talked about. I like the looks of it and the microwave part does seem to work ok. I haven't used the convection yet. The turntable is still not as clean as I want but is better. No, the plate is not yellow just coated with grease I guess. The only way it could have been on the underside is if something, maybe a casserole, boiled over while cooking on the racks and wasn't cleaned up.?? I appreciate everyone's help. Thanks.

How Dun wrote:
Thanks Gordon for your comments. Replacing the microwave is an option we have talked about. I like the looks of it and the microwave part does seem to work ok. I haven't used the convection yet. The turntable is still not as clean as I want but is better. No, the plate is not yellow just coated with grease I guess. The only way it could have been on the underside is if something, maybe a casserole, boiled over while cooking on the racks and wasn't cleaned up.?? I appreciate everyone's help. Thanks.

It could be that a casserole boiled over or just that the original owner never paid as much attention/couldn't see to clean the bottom as well as they did to the top. Sort of like the "round" corners that existed on my kitchen's vinyl flooring before I moved in. Watched the man cleaning one day and realised he just mopped in a circle:D.

I clean my convection/nuker by giving it a daily or weekly (yep sometimes I'm just lazy) steam bath of water and vinegar. Place a 3:1 ratio of water and white vinegar in a bowl and microwave the contents for about 4-5 minutes. When the machine stops just wipe out the interior with a damp sponge. This method saves me from the drudgery of unnecessary scrubbing.