Beaky,

I struggle to get the leads of the multimeter to all the legs of BR2, so thats why i seem to only be able to test AC (10V) at the top right, and +DC at top left (which is only 0.5V)

The two bottom legs seem just too difficult to get to when its in the machine.

F113 is definitely fine as i removed it to test it with continuity

I might just pull it apart again and quadruple check the traces