Hey folks,
I recently brought a Quadra 700 back to life that I got non-working
for a decent price off eBay. The resuscitation is an exciting story
in and of itself:
- First, the power supply was dead, which I traced to a bad
transformer for the +5v trickle supply, which also operates the rest
of the power supply's electronics; not being able to repair it or
determine the winding ratio for a replacement, I had to get another
power supply for more than I paid for the machine itself. If I ever
find out the details of the transformer, I may resurrect the supply
as a spare; the folks formerly of Bomarc have reverse-engineered
schematics that I may avail myself of.
- The PRAM battery had exploded, causing untold amounts of damage to
everything beneath it. One SIMM was rendered non-functional, the
interrupt and reset buttons are completely useless (they alternate
between inoperable and intermittently on, neither of which is
useful) and the acid ate away pin 14 (the power leg) of a 74F04 as
well as the pad beneath it, which made for infuriatingly erratic
behavior until I figured it out and fixed it with a white wire.
Anyway, I have a very happy machine now, but I need to replace a
few components. I've found a perfect replacement for the battery
holder (which was eaten away by the acid, as I discussed in a
previous email), but I'm having a hard time finding replacements
for the right-angle buttons used for the reset and interrupt
buttons. They're not strictly necessary, but since I plan on
using the machine for NetBSD driver development among other things,
they'd be very nice to have.
So does anyone happen to know where to find the BOM for the Q700
(highly unlikely), know what kind of buttons were used for the
Q700 (also probably the IIci and IIcx, somewhat less unlikely),
or know a good way to find buttons with precise mechanical
dimensions? I'd be greatly indebted. I realize this is a long
shot, but if there's anywhere that might have it, it would be
here (also Erik's VCF, which I'll also check).
- Dave