67 is flakey

[John Garza (3665)]

Well... if Teenix had more CPU cards.... (wink wink nudge nudge!)

Seriously, I have one of his CPU cards and they are great. Plug in replacement, no soldering.
But last I heard supply chain issues shut down production.

So given that, looks like you may need a donor machine. The soldering heat may have been enough to push a marginal chip over the edge. Not really a loss as it was already unreliable and headed for it's demise.

But before that it may be worthwhile to recap the card (will eventually need that anyway even if that's not the fault), and try the 20K resistor.

I know it's tough to make that jump to cannibalizing machines. But like lots of collectors here, you will accumulate 'parts units' over time. And you will be less anxious handling your operational machines with parts units on hand. Getting a really banged up machine that looks bad but still works makes it a bit easier.



-J