H7861 PSU issues

[Noel Chiappa]

    > From: Aaron Jackson

    > Picked up a few 555s and sockets and now it works!

Congratulations!

It's odd that a 555 failed, but sometimes there's no rhyme or reason to what
fails. E.g. I was fixing some broken M7859's (KY11-LB Programmer's Console),
and on one of them a 7493 (4-bit counter) had died. That's not one of the
'problem' 74xx chips, like ISTR the 7474 being?

	Noel