The lights are controlled though the control board which will have to be replaced, have seen this many times before, this board is part number (NNN) NNN-NNNN and cost about $175 so i can't tell you what to do but i would wait until more needs done before replacing the board just for the lights.
There is no halogen microwave. There is a halogen microwave oven bulb. (The technical term for a "bulb" is a lamp.) Some microwave ovens use a halogen lamp to light up the oven cavity. Replacing them is similar to replacing a "regular" incandescent lamp, except that when halogen lamps are being replaced, it is critical not to touch the lamp with bare fingers. Leaving skin oils on a halogen lamp shortens the lamp life and can set up a dangerous situation where the lamp might overheat.
Service manual is #4322167 (shows it as 1997 "E" models but covers MH7130XEQ)
Don't forget to disconnect the oven from the power supply. If the lamp of your microwave is in the most common location, you need to open the oven by unscrewing the screws on the rear. You can see the lamp just behind the control panel. Use protecting gloves and do not touch on the parts inside when replacing the bulb
You can't. Only if it's a microwave-oven
A convection oven moves the air, a microwave does not.
compare microwave oven to conventional oven
Microwave oven
There are no famous microwave oven commercials. There were a lot of commercials for microwave ovens in the 1970s, but none stood out as famous. This question probably should have asked what a commercial microwave oven is. A commercial microwave oven is a microwave oven used by restaurants and cafeterias.
If you mean the microwave and OVEN , then it does have microwave oven and also electrical heating oven capability.
A convection oven moves the air, a microwave does not.
Microwave oven
a microwave