Assuming it was not done on purpose and it was done on a standard freq of 350  this could mean the s-5 has the same problems Asic Miner prismas had.  Runaway thermals.

Time will tell if it is the case or if this is a rare case.  So far 1 person has had the problem.  Thousands have been sold.

So 1/2000 popped a pair of caps. Pretty safe we have seen  more then 1 burned sp20.

My s-5 will continue to run at a solid over clock. Here it is right now.