YAMAHA PORTASOUND MK-100

[phantompowers]

I've just been given one of these and couldn't wait to take it apart and bend it!
I've found a slight distortion bend and a kill switch for the rhythm backing but that's it. Nothing glitchy, noisy or weird.
Has anyone had a go with one of these? Is the PCB layout similar on other Portasounds?
I've been searching for info on these for fuckin ages and can't find hardly anything on them.

[Circuitbenders]

I'm sure i've seen an MK100 on the warrenty void site.

I used to have one of these but my mate kindly ran over it in a landrover 

[phantompowers]

Thanks for you reply but I have already checked that one out!!