SKB Footnote hot rodding

[TolerBear]

Hello. I'm new here at this forum and I was having an issue with my SKB Footnote. When I'm playing a set with it it seems to get hot and shut down momentarily and then come back on. I'm wondering if there's anything I can do to keep this from happening? I've already put a cooling fan in it but the fan quit working. Also I want more amps to drive more pedals. Any ideas? Thanks ahead of time and God bless you.