last night my 2 year old son cranked up the volume on the amp to maximum - after a few brief seconds of deafening volume it went totally silent and I haven't been able to get any sound out of it since. I've left it powered down for a few hours and reset the memory on it but it won't output anything including to the headphone socket. All the lights are on and you can access all the menu functions though. Before I cart it off to a repairer, does anyone know if there is some sort of reset switch inside that might help ? Was this some sort of protective cut off that's been activated and needs to be reset or does it sound like something has blown ? It seems stupid that an amp can damage itself in this way. I would have thought that the maximum setting on the volume should be at a level where the amp can still handle the power. Its like having a self-destruct button on the front panel.