How to tell if a CMOS chip is toast?

[Emmanuel AMADIO]

> Anti ESD lab equipment is a good investment. About 75 Euro will do
> 
> Table mat, wrist strap, soldering iron with ground connection,
> some conductive foam plates to put circuits on and to discharge circuits
> that you're going to touch. That's all you need.

First thing is probably the wrist strap, really useful, you can at least get it to the synth's ground which helps saving
some chips.