2000 volvo s80 climate control panel is dead

Hello, I have been fooled more than once by a bad fuse based on how they look. The fool-proof way is to use a test light and check for power on both sides of each fuse with the ignition turned on. When you find a fuse that only lights up on one side, change it. Otherwise, the A/C control panel may be getting power but the connector has wiggled loose or the control panel has failed. Check for power at the connector, and if power and ground are present, the electrical connector is plugged in, and the panel does not operate, you should seek to replace it.