I've just been given access to an Altair 680. It seems to be
in excellent physical condition (no rust, corrosion, dents...
just some dust). Has not seen power in many years. All of
the ICs are socketed. Due to the fact that the PS is
incorporated onto the main board, I was planning the following:
1) Remove the main board from the case, detaching it from the
front panel board.
2) Remove (carefully noting their positions) all of the ICs
from the main board.
3) Attach dummy loads (24V light bulbs) to the PS at convenient
locations. How many should I use?
4) Attach to AC power in this state. Assuming nothing pops,
check DC voltage (voltages?) with a scope. Assuming DC
looks good, allow to warm up for a few hours.
5) Scope check DC again. Power down allow to cool for a few
minutes. Repeat steps 4 and 5 a few times (3? 4?).
6) If all looks good, reinstall all of the "easy to replace"
ICs and do 4 and 5 again.
7) If all looks good, reinstall the rest of the ICs, restore
the main board to the case and front panel.
8) Debug any logic problems (dead chips, opens, etc.).
Does this look reasonable?
Thanks,
Bill
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Version: 7.5.476 / Virus Database: 269.10.4/898 - Release Date: 7/12/2007
4:08 PM