let's not conclude anything yet - but suffice it to say WSPR can be rough on this rig - the original QCX without any heat sinking on the bs170 finals. I can't speak to the qcx+ on WSPR, but the heatsink at least looks nice!
let's see - single band rig - if you do WSPR once each 10 minutes - I would think it should work if your antenna has a reasonable match. kaput? I would think only the bs170 finals take punishment - order a batch of them from W8DIZ if you are stateside.
now i did smoke some bs170 in my QCX - when I plugged in GPS and did not realize it set rig into transmit. hang in there I hope the QCX is still okay.