Good day,  just want to make clear, once i had a power glitch (when i turned the amp on, power button was ok, but the channel and sound didn't appear and there was a click sound that at least it tried to) i noticed then that my power cable on the rear panel got loose a little so i set it properly and now always check the cables firstly before playing.  There are no problems anymore. So can a loose power cable be a culprit of such behavior? Is it dangerous for an amp? By the way there were no sparks or cracking sounds from the socket.