CHANGE LIGHT ON WHIRLPOOL RANGE HOOD - GE JVM1651 Microwave Oven

That is the power level or brightness of the light setting.

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You have no power to the unit. Breaker is out or the hot wires into the hood has come apart. The wires coming into the unit usually terminated in a junction box next to the fan housing.
Teas it for power an/or reset breaker.

Either the wrong bulbs or just bad ones. The oven only gives it the 120 volts. It won't be the microwave oven. Just bad bulbs

should be access panel to bulb,probably held closed with a screw or clip of some kind,sorry couldnt be of more help

probably the diodes have blown, easy fix if you can solder and use a multi meter.Get back to me if you want to try it

Pretty easy to change.Maybe cash and carry would be a little cheaper, or even trying an appliance dealer to see if they can get the same thing. Perhaps contacting manufacturer of microwave directly will help. (www.dometicusa.com) There was some recalls on some of the models. Are you sure it's not just sitting in an opening above the range hood. Most are just 4 screws or so, and out they come from opening above that.

My Whirlpool/Roper microwave/hood combo has the same problem. I replaced the bulb twice, checked the bulb and it works, but not in the microwave. I wrote to Whirlpool asking about the problem. Haven't heard from them yet.

It doesn't have to vent outside. These are designed to recirculate the filtered air back into the room. If you cook without a range hood now it will work fine for you.
Eric

sears should be able to get you the installation instructions and maint manual for this also, get on line go to sears.com and look up uour microwave part number like you did and look for the manuals

I just took out the range and made an outlet out of the existing wiring.