Did my CJ Blow a Fuse?

I have a pair of Premier 12s. Yesterday, the left channel fuse light came on (while I was warming the amp up). Sure enough, when I tried playing music, 90% of the sound came from the right channel. I took out the suspect fuse, looked at it, put it back into its home in the amp and, whalla, the light went out and left channel came alive as if nothing ever happened. Any idea what that was all about? Any similar experiences? Thanx.