There are 2 light bulbs in the ref. department. 1 is out. I replaced with new bulb. Did not work. Can only get 1 bulb to work at a time. Both sides work because I switched bulbs. Is there a switch I may have turned off by mistake that only lets 1 bulb work at a time?
Can only help if you post the complete model number.
Even then I may not be able to.
If you do not have the operators manual then download it from the sears parts site.