MA Audio HK4002

I am getting bored with seeing this amp sit in the corner of the basement collecting dust. I had it fixed once by a local repair shop (highly recommended in the area), and it blew on me when I hooked it up. Upon the re-fix of this same amp, it was installed by the shop installer, only to emit a disgrunteling pop as it died again. They wern't happy now, and I could see this. The third fix was then handed back to me months later, as I installed it in the truck, got some noise, began jumpin around like a 12 year old in a candy shop, and then.... ZERT. It truely must be the cursed amp. I have given MA lots of patience, but here it is 3 years later and my Memphis ST1000D still hits every note without a hitch. I'd be fine with it so long as I don't crave more, but I do. Do you have any info on how I would send an MA Audio product back to the manufacturer for repair? I'm already 245 bucks deep in repairs on this bad boy, but if it gets me an amp that will power my Immortal Series 15, that'd be worth looking into. Sorry this is so long. Mike