When I first got my 845 amp, (cheap Chinese I have to admit), I had installed some tubes in it and listened for awhile. I decided to try some different tubes in it, and one of the 845 tubes would not come out, nor would it rotate in either direction.
I took a good hard look at the tube and socket, figured out the alignment pin in the side of the tube had been knocked out of place. I used a very thin metal screw driver, and managed to drive it in far enough to create clearance for the pin to come loose, then turn the tube counter-clockwise, and remove the tube.
The tube socket got bent out of shape a bit, but I was able to straighten it out ok, and all is well. I suspect you are having a similar problem.
Hope this helps, and you manage to retrieve your tube.
Regards,
Dan
I took a good hard look at the tube and socket, figured out the alignment pin in the side of the tube had been knocked out of place. I used a very thin metal screw driver, and managed to drive it in far enough to create clearance for the pin to come loose, then turn the tube counter-clockwise, and remove the tube.
The tube socket got bent out of shape a bit, but I was able to straighten it out ok, and all is well. I suspect you are having a similar problem.
Hope this helps, and you manage to retrieve your tube.
Regards,
Dan