Re: 2215A repair and restoration
The proof of the pudding is in the eating :-)
Quick and dirty check to see if a replacement CA3127E will fix the triggering.
Since the chip is out, the 16 dip holes are open and easily accessible front the bottom side...
So I temporarily out some general purpose NPN transistors and, and behold: it is working.
So now I can calmly wait for the IC to arrive.
Here some pictures of the "temporary fix"