Hi folks and thx for reading this. I purchased an open box, mint condition miniMega 1000w amp for use with my PVH 210 cabinet. After a minute or so after turning the amp on the fan kicks on (at different speeds sometimes) and speaker outputs shut off so no sound coming through. Headphone jack still works but at lower volume. I read that these heads have issues with overheating and I'm hoping there is something I can do to fix it myself. Peavey isn't taking returns/repairs at the moment and can't find anyone local to look at it. Any help is much appreciate, thx.