BTW here is a good web site that deals with troubleshooting
SMPS (switching mode power supply). I like the disclaimer, it
is not the usual, dry, "whatever happens is not our fault"
statement one usually sees. :)
------------------------
<http://repairfaq.ece.drexel.edu/sam/smpsfaq.htm>
DISCLAIMER
"Careless troubleshooting of a line powered switchmode power
supply can result in severe electrical shock or electrocution.
This is potentially more lethal than the high voltage section
of a TV or monitor due to the high current availability. Even
the charged on the main filter capacitors with the unit
unplugged can kill.
We will not be responsible for damage to equipment, your ego,
county wide power outages, spontaneously generated mini (or
larger) black holes, planetary disruptions, or personal injury
or worse that may result from the use of this material."
------------------------
They also have the following to say about Dell's psu.
[Someone was asking about a Dell psu a short time back.]
------------------------
<http://repairfaq.ece.drexel.edu/sam/smpsfaq.htm#smpsnatx>
"IMPORTANT CAUTION: Apparently, Dell, who has followed industry
standards in most respects, changed the ATX power supply pinout
on their PCs sometime in 1998 and may still be using this
proprietary pinout. See: Dell Proprietary (Non-Standard) ATX
Design. Since there is absolutely no valid technical reason for
doing this, one can only assume it is due to some, shall we
say, shady business decision to prevent people from going to a
third party for upgrades or replacement mainboards or power
supplies. Worse, installing a non-Dell power supply with a Dell
mainboard will result in a destroyed power supply and possible
damage to the mainboard. Thanks Dell."
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