Well, basically I'm a doofus !
At regular intervals I accidentally keep switching on my tube heads with no speaker load. I seem to do this for all sorts of bizarre and varied reasons. I guess I'm probably not alone in this !
Today, I was attaching a new Hotplate (I haven't used these before), and after a number of attempts at switching on, and getting silence, I finally realised that I had my cab attached into the Hotplate's "line out" rather than the "speaker out". This would have have definately been a "no load" situation for the amp. Each time it probably lasted no more than 10 seconds and the volumes were low.
My question is this - As the amp seems to be fine, have I "got away with it" this time, or do lots of little cumulative bits of "no load" do long term, cumulative damage to the amp (OT, I'm expecting) ??
Experts please apply wisdom here ......

Today, I was attaching a new Hotplate (I haven't used these before), and after a number of attempts at switching on, and getting silence, I finally realised that I had my cab attached into the Hotplate's "line out" rather than the "speaker out". This would have have definately been a "no load" situation for the amp. Each time it probably lasted no more than 10 seconds and the volumes were low.
My question is this - As the amp seems to be fine, have I "got away with it" this time, or do lots of little cumulative bits of "no load" do long term, cumulative damage to the amp (OT, I'm expecting) ??
Experts please apply wisdom here ......