Maytag Skybox I have the same problem and need to know if you know the part number for the sensor

SOURCE: Maytag Skybox MBV1976AAB Compressor Start Relay

I just read another post on a different site from someone who said they were able to pay $160 for a refrigerator technician to come out and replace the compressor and install 2 additional fans to help prevent overheating. I'm going to look into this, otherwise off to the dump. Had ours for over 2.5 years and it just stopped cooling last week. Bunch of warm beer and sodas in there now...upsetting, but what do you expect when everything is made in China these days. Our country has let itself down for letting quality manufacturing give way to cheap labor.

SOURCE: maytag skybox schematic

there is a basic schematic on the back of the unit

SOURCE: Maytag Skybox dispenser

I also have one of these vending machines. The problem Maytag had with these and the reason why they are discontinued is that it was not made with an automatic defroster. SO, ice litterally builds up on the entire motor in the back and then the buttons do not work. Here is an easy test. Unplug the machine for 24 hours and if there is ice on the motor it will melt off(to where I dont know!!). Try the buttons again and see if they work. Mine did. They also had to come out and replace one of the pieces inside because the ice broke it! Mine by the way does not work anymore because the other problem they have had with these is that the compressor goes bad!! Once THAT happens, its more expensive to fix than it's worth! Good luck! Maytag SUCKS!!!

SOURCE: maytag skybox not cooling need name of place and

before replacing parts. unplug it and from back and under neath get all the dust out,best to blow air in there to remove dust than plug it back in and leave it on number 3 setting for 6 to 8 hours than if cold you can adjust the settings.
or part location is at www.maytage.com/skybox parts
Good Luck Im pretty sure you won't need to buy part's after air cleaning

Testimonial: "`will try it and let you know.....thank you very much,,,,,,"

SOURCE: The part I need for my Maytag Skybox is NO LONGER

REMOVE 3 WIRES ON SMALL BOARD RIGHT AT BOARD SURFACE. LOOK FOR END WIRE WITH X PRINTED ON IT ,PUT OFF THE SIDE. YOU WILL NOT USE X WIRE. SKIN CENTER WIRE AND END WIRE , THESE ARE WHAT YOU WILL HOOK UP. DO NOT TOUCH 2 OUTER WIRES THESE ARE DEAD SHORT. IF YOU DO NOT SEE X ON WIRE DO NOT WORRY CENTER WIRE AND 1  END WIRE WILL NOT SHORT. JUST BOTH OUTER WIRES DO NOT CONNECT. GET SET OF RADIO SHACK WINDOW ALARMS MEGNETIC CLOSE AT CONTACT. SILICONE SCREW TERMINAL MAGNET TO UPPER RIGHT SIDE SOLID DOOR EDGE AND OTHER MAGNET TO UPPER RIGHT FLAPPER DOOR ABOUT 1 INCH FROM EACH OTHER DO NOT USE SCREWS. REMOVE DOOR AND LAY FLAT IF NEEDED. THEN HOOK UP 2 WIRES AS DESCRIBED. IF YOU ARE NOT SURE OF 2 WIRES HOOK UP MIDDLE WIRE TO EITHER OUTSIDE WIRE ONE WILL WORK AND ONE WILL NOT. AFTER SILICONE DRIES HOOK UP WIRES . NOW YOU HAVE A WAY TO RESET  CYCLE , IF YOU USE GLASS BOTTLES YOU MAY NEED TO HOOK UP NO-NC 2 TERMINAL WITH COMMON TERM. SWITCH.