> I also had problems with my 126 dying on me, lots of times, but it doesn't

seem to have

> happened for the past couple of years at least. (My module dates from

1998 I think.) At the

> time, it wasn't about it not powering on, but rather it would stop working

in the middle of

> use. Then if I powered off and back on (suitcase), usually it would start

working again. I had

> thought that it was maybe due to being overdriven at the input. Is it

possible to damage it or

> have adverse effects by overdriving the input (just with other A-100

signals)

>
> thanks,
> Ernst

There is no chance to damage the A-126 by overdriving it with other A-100
signals. Btw this is valid for all A-100 modules. Only if external signals
beyond the A-100 voltages (i.e. more than +12V or less than -12V) are
connected an input of an A-100 modules damages may occur. But even with
voltages beyond these limits most of the modules will survive. It depends
upon the input circuit. If there is a virtual GND summing node (the standard
inverting amplifier/adder circuit) even higher voltages will not damage a
module.

Best wishes
Dieter Doepfer