Gold Note AP-7 stopped working- any advice?


Hello and happy new year,
I have an AP-7 amp. Accidentally I turned the volume up to 91, then changed the channel which was playing music. It was so loud that I turned the power off. Since then the amp does not turn on. No light, no reaction at all. Is it completely burned? Is there something to do? I bought it almost 6 years ago.
Thanks
danigal