18 Oct
2015
18 Oct
'15
11:31 a.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of tony
duell
Sent: 18 October 2015 18:36
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: Opening a DECserver 90M External PSU
If possible you want to squeeze the 'inner member' of the joint. So what I
do is
> I had another go today, but I fail to see
how you managed to pry
> this thing apart without causing much more damage than appears in your
photo.
What kind
of tool did you use?
My usual technique to deal with these sort of brick and wall-wart PSUs
that are glued together is to carefully squeeze their plastic sides in
a small padded vise to break the glue joint. With practice, you can
split put the jaws of the vice just to one side of the seam
and squeeze, and if
that
doesn't help then turn the whole thing over and
sqeeze on the other side
of the
seam.
> one of these open with little to no damage. Don't be tempted to use a
> mallet as you could with really old linear transformer wall-warts
though.
The g-forces
generated by a mallet will break components off of a pc
board in a switchmode PSU.
Or the other old trick for linear PSU bricks (again, don't try it with -- hold the cables about 2' from the unit and
swing it round so that it
hits the
bench or floor. That often cracks them open with
suprisingly little
damage.
Oh for the days when we had screws holding such things together!
-tony
=
Great idea to use a vice, never thought of that. Will give it a go.
Thanks
Rob