It was one of the first amps I ever used in my first proper band.
Also because they are geared to work as a guitar, bass and keyboard amp which is great as I needed a bass amp too.
It has a 2x12 cab and is separate unlike most versions of this amp. According to the previous owner this one is a one off, built for a trade show. You can see clearly that the amp part would fit fine into the top part of the cab.
I was planning to slave one to the other and have a bit of a stack.
I did do this using the dual outputs on my overdrive pedal, but I now know I could use the slave out on the Alligator.

I had to replace all the pots on the front panel when i bought it as they were all shot.
So I go to fire it up yesterday and it's silent. Seems to power up but no sound coming through to the speaker.
Time to get out the soldering iron and check all the joints and for anything obvious.
Then I notice something odd I've not noticed before.

The two holes where the heatsink should be are not used and they are somewhere else.
I open and something seems odd:

The actual amp board has been replaced:

Something about the board looks familiar so I google it.
It's been replaced with a Maplin standard kit amplifier.
I also notice one of the main capacitors is swollen:

The transformer:

So where do you think I should start?
Replace the capacitors, the transformer or just dump it and keep the cab?
I've tested all the output fuses and they seem to be fine. I've not even moved it since I last used it.
Any suggestions?
!m!