How can I fix my Hotpoint rangehood microwave Model RVM1335WC 001?

My Hotpoint over the range hood microwave oven heats fine, the display is fine, but the lights underneath as well as the hood fan do not work anymore. We heard a loud "pop" when the lights were on which scared us. The lights went out and we found out the fan is inoperable now too. The fan for the microwave still works, just not the range hood one. Is this something worth fixing, or would it be better to replace the thing?