Power light not working
The repair to this depends alot on how flexible you are. It is going to require, your getting down on your side, and seeing how much access you have to the lite device.
DO NOT TURN THE REFER ON ITS SIDE OR LAY IT DOWN ON ITS BACK.. IF YOU DO, WHEN YOUR DONE, STAND IT UP AND DO NOT PLUG IT IN FOR 48 HOURS or TWICE THE TIME THE UNIT WAS LAYING DOWN. WHICH EVER IS SHORTER.
Basically, you may have a corroded connection or a burned out bulb. You can either replace the whole lite device, or you can install a second lite device that shows the unit has power going to it.
If it were me, I would just install a second lite. If your electrically savoy, then finding a power source would not be a problem, you could attach one to the vent cover on the bottom of the unit. They probably are about 2-4 bucks. You could drill a small fitted hole in the vent the covers the front bottom of the unit and press it in there and route the wire to where ever you choose.
If you want to know if you have power to the unit, what I have done in my garage (I have a freezer with the same problem), I just took a cheap radio, plugged it into the same plug outlet and turned it to my favorite station. Now, when I go to the garage, if the radio is ON, I am OK, if not,,,,,,, I open the door and check and see if things are A-OK in there and find out why my power disappeared . It has only happen to me once in about 15 years, and it was a wall socket that CLICKS OFF when a wrong variation of voltage is detected.
So, I basically listen for the radio in the garage. Hope that helps.
kindly,
Jim