26 Mar
2011
26 Mar
'11
2:14 a.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Rob Jarratt
Sent: 22 March 2011 14:09
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: RE: Smoke From PSU Socket
metal
I have closed the box again, but I seem to remember the socket did indeed
have a covering, presumably with components inside. Should I consider
replacing the whole socket, or is it possible to repair the individual
components inside? Assuming of course that the damage is not too great.
Regards
Rob
I have found the time to open up the DELNI again. The module is a Schaffner
323 6/05. It looks very similar to the FN9222 here:
http://www.schaffner.com/components/en/product/productL22.asp?level=3$1$2&a…
nguage_id=12. Should I be able to substitute the failed one for a modern
one, such as the FN9222?
Regards
Rob
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Jules Richardson
Sent: 22 March 2011 02:30
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Smoke From PSU Socket
Shoppa, Tim wrote:
>> Also I don't know why the socket shorted, if it *was* wet then
>> perhaps I could plug it in again, but I am very doubtful that this
>> would be a good idea. Should I just be thinking of replacing the
socket?
Many "IEC sockets" are more than just sockets, and incorporate EMI
suppression components as well. The euphemism becomes "power entry
module" instead of "socket". The EMI suppression components
(especially capacitors) in them are specced for AC line voltage
applications and UL rated such, but they still let out their magic
smoke
every so often :-).
I was wondering that, too. I've seen plenty of such sockets that have
a can on the inside of the case containing
suppression components, and
have seen more than one fail - result being that the smoke works its
way out
via
the external power cord pins. It's so long
since I've been inside a
DELNI
that
I don't remember if they have these (or if
they're just a plain ol'
socket)
Even if it's just a socket, some debris can
get in there during
storage, you plug it in, the debris trips a fuse and vaporizes, and
all you're left with is a charred socket.
Maybe the power cord, even - damaged contacts or internal wiring, and
plugging it in shorted things out?