Got out one of my nice looking and clean BBCs thinking that it would be less likely to have issues.
Plugged the machine in and connected to the monitor.
Nasty smell and the famous white smoke started pouring out of the power supply.
Guess that's another one that needs the capacitors replacing.
Got the new tape drive unit from storage and plugged it in, all looks good it has the correct lights etc and tries to load the tape.
Unfortunately nothing is moving inside the tape, looking inside the unit it looks like the pinch roller inside has perished, apparently this is quite common. So now need to see if I can replace it with a suitable alternative.