PDP-11 with ATX power supply

Noel Chiappa jnc at mercury.lcs.mit.edu
Sun Mar 8 09:00:01 CDT 2015

    > From: Earl Evans

    > I have a BA11-N mounting box with Q18 9-slot quad-height backplane.
    > The power supply is toast.

Toast, how? Physically mangled, or just not working? If the latter, it
might be possible to fix it. (Even if you're not up to that, don't pitch
it - someone else might be interested in it as a repair item.)

The other thing you could do is install a BA11-S power supply (H7861); some
are available on eBay. They are compatible (physically/electrical interface),
the H7861 just has a few more amps of +5V.


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