Something else smoked your SS amp. You can do that more than momentarily. Ive dealt with many many SS amps including PA ones for nearly 40 years. I never met one that could NOT run without a load. No load is like infinity. It is fine. Ex. From all about circuits. Solid-state amp (almost always) have no signal transformers and have a low output impedance, looking simply like a voltage amplifier, so whether they have a load or not has little effect on the signal output voltage, and thus they are not damaged by no load They have a minimum impedance and that also is at full or high levels as mentioned. At lower levels you can get away with it. Not that I would do it.