My Volvo 850's dashboard lights and instrument lights for the radio and A/C are not working properly. This happened two nights ago when I was driving, everything just went dark. The lights in the car worked, and so did the radio. After a few hours, the lights started working again.
Then last night, the lights went out again while driving at night. I checked the fuses and there doesn't seem to be a problem. This morning, I went to check the lights and it's all back to normal again. What could have been the problem?