Path: utzoo!attcan!uunet!husc6!bloom-beacon!bu-cs!purdue!i.cc.purdue.edu!j.cc.purdue.edu!pur-ee!uiucdcs!uxc.cso.uiuc.edu!uicsrd.csrd.uiuc.edu!andrews
From: andrews@uicsrd.csrd.uiuc.edu
Newsgroups: comp.sys.mac
Subject: Re: SE dead! Any ideas?
Message-ID: <43100005@uicsrd.csrd.uiuc.edu>
Date: 13 May 88 04:08:00 GMT
References: <9736@agate.BERKELEY.EDU>
Lines: 16
Nf-ID: #R:agate.BERKELEY.EDU:9736:uicsrd.csrd.uiuc.edu:43100005:000:639
Nf-From: uicsrd.csrd.uiuc.edu!andrews    May 12 23:08:00 1988



Clicking noises are exactly what you hear when you
overload or short a switching power supply ( the kind
inside the SE).  The supply tries to come up, sees
a load that is too large, and protects itself by
shutting down.  Since you did not mention any hardware
mods (or did you?), it sounds like something in the
supply blew.  A blown fuse on the 115 AC side cannot
be the problem, since the machine would be silent in
this case.  However I don't know if the DC outputs of
the supply are fused (I doubt it).  If so, this could
cause the symptoms, although I really don't know that
much about switching supplies.  Good luck.

John Andrews