New caps, voltages checked, loaded up. Realised I’ve lent someone my cab, frustrating. Cab came back a bit later, and its all good to go, no bad noises, think need an ECC81 somewhere instead of an 83 because its breaking up a bit early on the gain knob for a bass amp. Didn’t take a pic of inside because it looks basically the same with different coloured caps and slightly more ragged wires because of having to unwrap them from the old caps. Here’s a photo of the mark inside the case from previous explosion:
And stacked up with my Pro 502, this and my silver fronted 4×12 will probably be my rig, provided the 4000 pushes enough lows.
Just waiting on getting hands on some KT77s for it.