There is a Fender BXR 300C at my school that has been non functional for about 2 years. It may get taken to a shop at some point, but I'm wondering if I could fix it myself and spare the music program some funds. There is no outside damage beyond a ripped up grille cloth, and I have noted these things: It turns on, the fan spins up, and it faintly hums when turned on, which I assume is just the noise of the amp being active. However, it makes zero noise (except the hum) when I try to play through it, no matter the volume. I have tried both inputs. It isn't a lot of info, but I am inexperienced with amps in general, and do not really know what to look for. Any idea what could be wrong with it or what to look for? Help is very appreciated.