Does anyone have any idea what could remedy my problem?
Did you read?
http://www.applianceaid.com/micro6.html
A copy:
Q - While trying to change the light bulb on the oven, the bulb broke. When it did, it threw the circuit breaker and the whole oven went out. After resetting the breaker, everything on the oven works except there is no power to either light socket. Any ideas or suggestions on what to replace?
A - You tried to change the light bulbs with the power still on.....tsk tsk!!
Hate to say this....but probably blew out part of the circuit on the smart board ( the brains behind the key panel you touch ) when the short blew. The light relay on the smart board may have been damaged but 9 out of 10 times when I check them, the board itself is damaged.
You can check with Sears on the price of the part to see if better to repair or replace the microwave.
jeff.