PDP-11/10 PSU Repair/Warning

Noel Chiappa jnc at mercury.lcs.mit.edu
Thu Jun 6 13:17:52 CDT 2019


    > From: Paul Anderson

    >> (I also should check to see if the H742 uses the same 15V board; it
    >> uses the same 'bricks', so it may.)

    > Didn't the H7420 , which replaced the H742, use that also? The H742 uses
    > a different one .

Oooh, good catch! The H742 uses a 5409730, but the H7420 does use the 5411086,
the same as in the H765. I always wondered what the difference was between the
H742 and H7420.

I wonder if the two boards (and thus the the power harness) have an identical
pinout, or not.

	Noel


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