Chassis is out of the cabinet at the moment. Putting it back in is a 10 minute job....no big deal there. If the HV lead doesn't need to be connected I do have an adapter lead to hook up the socket so I can set the tube next to the chassis. I don't have a test tube here. And the cover is definitely off the chimney
Just tell me what's next. This set has a ride back home next weekend if we can get it figured out. If not no big deal.....it would just have to wait till the next time.