Due to Ian's kindness this scope is now running, swopped the tfmr the other day, so now it's check everything out as per the manual. Not sure how I'll do this as don't have have the gear mentioned especially the calibration plugin's but I can take voltages, check waveform's etc.
If anyone's interested I've recorded my doings here -
https://www.youtube.com/watch?v=ULeXcKUTKBg&t=4s
Andy.