yes, i bent one, and it was quite good..
all i did was a patchbay to the pins of the pcm chip, can't remember if i searched/dicovered more, but it was enough for me anyway
the patchbay was a 25 pin connector on top of the box.. idea was to make a mount on controller later, when i
explored all the interesting connections. meanwile i plugged in all kinds of components.
i was happy with it, cause it sounded so good, like the hr16.. so i bended only the sounds, while the rhythm remained the same.
then i left it for a few days with some capacitors in the patchbay still. and then it went nuts.. braindeath..
after it only glitched from time to time, nothing more.. suprising enough the glitches where typical casio sa style..
right now it prevents its underground from getting dusty.. maybe someday i disconnect its back up cell, and see if it turns normal..but not much hope
so.. wicked bender, truely worth to put in some energy, but be carefull as it might break
i will check my "archives" to see if i got any pictures of the inside, but i'm afraid i didn't make any