Re: securing 15V pwr monitor board in H765 supply

[Fritz Mueller via cctalk]

> On Jan 19, 2021, at 3:11 AM, Paul Birkel  wrote:
> Fritz:  You are referring to the 5411086 board as seen in the lower picture 
> at: http://gunkies.org/wiki/DEC_Power_Line_Monitor ?

Yes, exactly.

> Mine has screws on all four corners to secure it to corresponding tabs in the 
> metal frame for the power control circuitry.

Interesting -- there are no such tabs in metal frame that I have; just a slot 
into which to board slides.

Thanks for taking the time to check, Paul -- I think I might just end up 
drilling some holes and adding a couple bolts to secure board in the frame I 
have.

--FritzM.

RE: securing 15V pwr monitor board in H765 supply

[Paul Birkel via cctalk]

Fritz:  You are referring to the 5411086 board as seen in the lower picture at: 
http://gunkies.org/wiki/DEC_Power_Line_Monitor ?

Mina has screws on all four corners to secure it to corresponding tabs in the 
metal frame for the power control circuitry.

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Fritz Mueller 
via cctalk
Sent: Monday, January 18, 2021 4:38 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: DEC: securing 15V pwr monitor board in H765 supply

Hi all,

I’m reassembling an H765 supply after cleaning and repairs.  It has the "newer" 
style 15V and power monitoring board (the one with the edge finger connector, 
same as used in H7420 supplies.)

The board slides into a slot in a sub-chassis that also houses the power 
control circuitry, which small chassis later slides into, and is secured to, 
the larger H7420 chassis.

I cannot for the life of me figure out what, if anything, secures the power 
monitor board to the small chassis! There don’t appear to be any conveniently 
placed fixtures to which to screw down the board, and I haven’t been able to 
inform myself by pondering the various engineering diagrams, IPB’s, nor the 
pile of remaining fastening hardware...

When I test-fit everything in the larger chassis, the unsecured board is held 
captive only by the grace of the surrounding wiring harness and by some small 
clearance issues with the large cap on the board.  This doesn't seem 
satisfactory; as part of something like an 11/34 on tilt slides, it would seem 
to bang around a bit in there if left loose like that.

Am I missing something?  Puzzled...

 --FritzM.