PDP-11/10 PSU Repair/Warning

[Paul Anderson]

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

On Thu, Jun 6, 2019 at 9:07 AM Noel Chiappa via cctalk <
cctalk at classiccmp.org> wrote:

>     > From: Systems Glitch
>
>     > I finally fixed the power supply in my PDP-11/10S ... For those who
>     > have original 5411086s that haven't failed yet, you might want to
>     > make up a little pigtail with an inline fuse holder.
>
> Congratulations, and a great blog write-up.
>
> The issue you point out (lack of fusing for some components on the +15V
> board) will of course apply to not just -11/10S's, but any -11 which uses
> the H765, either for the CPU box (e.g. /04, /34) or for an expansion box.
> This is important enough that I think I'll add a writeup to the CHWiki
> article for that:
>
>   http://gunkies.org/wiki/H765_Power_System
>
> which restates the problem, and the proposed solution. (I also should check
> to see if the H742 uses the same 15V board; it uses the same 'bricks', so
> it may.)
>
>         Noel
>