We fix these. Probably about $90, little amp, worth fixing though, decent amp. Probably some vibration damage caused the demise of this thing, that's usually the case with any "spring clip" amp. And yes the silicone on the power supply transformer is just holding some wires from moving that do not need to move and be rubbing on stuff. If it had been worked on before (the silicone doesn't exactly look like factory did it, they use smaller globs) then it may have a transformer winding short and mounting it a different way could have aggravated it to the point that it shorted and blew the power supply but about 90% of the time that is NOT what we find, we usually find at least 1 output mosfet (on the other end of the amp from the burn marks in your pics) that will be bad, with at least 1 leg broken from vibration, and that one shorted out mosfet (does not explode, just shorts out) will cause the power supply to explode if the amp doesn't go protect fast enough.