Re: 3.3V on ATX power supply doesn't work
- From: davy <davy.2o9i8c@xxxxxxxxxxxxxxxx>
- Date: Fri, 30 Mar 2007 07:38:17 -0500
Powering a computer supply up with out any load is not really
recommended without load on the hi-current supply line.
Sounds to me if it blew the 3.3V rail you've got a problem on the mobo,
to save the same thing happening again is to check the 3.3v supply line
on the mobo for a short circuit with a digital test meter... first with
all the cards removed adding another card and trying agian until all the
cards are inserted.
While you are in there look for bad capacitors see-: 'Don Davidson
Computer / Bad Capacitors in System Boards'
(http://home.earthlink.net/~doniteli/index27.htm) and also look for burn
mark's, usually brown or black patches on the mobo.
Leave the CPU in situ till the very last item to avoid damage - only
remove this and check for shorts if all cards are removed and still
showing a short or low resistance reading, this will prove mobo or CPU.
Applying another PSU 'may' result in another blown unit without
checking first.
Davy
.
- References:
- 3.3V on ATX power supply doesn't work
- From: David Peterson
- Re: 3.3V on ATX power supply doesn't work
- From: w_tom
- Re: 3.3V on ATX power supply doesn't work
- From: David Peterson
- Re: 3.3V on ATX power supply doesn't work
- From: w_tom
- Re: 3.3V on ATX power supply doesn't work
- From: David Peterson
- Re: 3.3V on ATX power supply doesn't work
- From: w_tom
- Re: 3.3V on ATX power supply doesn't work
- From: David Peterson
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