On Thu, Mar 21, 2019 at 9:48 AM Chuck Harris <cfharris@...> wrote:
4051 MUX's fail regularly, as do the opamps in the sample and hold
cells... and be suspicious of any CA3046's, or 3346's. on
occasion one of the sample and hold storage capacitors will get
leaky.
I also remember a case where a decoupling capacitor on the mainboard side
of one of the A5 control lines went leaky and pulled the control signal
down.