I've hooked my LTC1799 up to my casio SK5's 'brain' (a coil near where the tuning trim-pot is located), found the right pin on the coil, and cut the copper trace/PCB so that I can switch between the original clock source and the LTC.
I've found it to be both amazing, and unstable. It doesn't work (though did once) on batteries, and will often crash or make more noisey sounds when using the powersupply and playing more than one note.
Is it possible the power getting to the chip isn't strong/consistent enough? It needs 2.7v to 5.5v and I think (it is closed up at the moment), I was sending the IC around 3.4V. Is there a good way to find a consistent and solid powerline for the IC?
Thanks heaps. ps. I'll post pics soon here and to the SK Yahoo Group for other benders!