tlc89

The dome light is not working. I was told it used to work and both the fuse and light bulb is good. To have it diagnosed will cost at least $50. I was hoping someone that had a similar experience can give me some idea what might be wrong. Other interior lights in the car are fine. I checked the fuse but I don't really know how to check the light bulb, the mechanic checked it when I brought in the car for maintenance recently. So the other question is how can I check the light bulb? Should I just pry open the plastic cover?

Thanks in advance for the help...