Re: 3MIN 5000/125 power supply?

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

Just for FYI,

I wrote back in 2006:

> Unfortunately, power supply unit on my 3MIN (5000/125) seems dead.
> (no voltage output, no fans and LED; fuses look ok)
> 
> Is there any info about repair, replacement, or pin assignment etc?

Recently I found the following web page:
"DECstation in ATX enclosure"
http://www.xanthos.se/~joachim/DS-ATX.html
This page also has information about pinout of PSU in 3MIN:
http://www.xanthos.se/~joachim/PSU.pdf

Other pages also have misc useful information for misc DEC machines:
http://www.xanthos.se/~joachim/index.html


Yesterday I bought a cheap ATX power unit and replaced
the internal circuit board in the PSU of 3MIN (with misc ugly tricks),
and finally my 3MIN has been revived after three year sleep and
now it's running 5.0 :-)

---
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 5.0 (GENERIC) #0: Mon Apr 27 02:48:07 UTC 2009
        
builds%b1.netbsd.org@localhost:/home/builds/ab/netbsd-5-0-RELEASE/pmax/200904260229Z-obj/home/builds/ab/netbsd-5-0-RELEASE/src/sys/arch/pmax/compile/GENERIC
DECstation 5000/125 (3MIN)
total memory = 98304 KB
avail memory = 92044 KB
timecounter: Timecounters tick every 3.906 msec
mainbus0 (root)
cpu0 at mainbus0: MIPS R3000A CPU (0x230) Rev. 3.0 with MIPS R3010 FPC Rev. 3.0
cpu0: 64KB/4B direct-mapped Instruction cache, 64 TLB entries
cpu0: 64KB/4B direct-mapped write-through Data cache
tc0 at mainbus0: 12.5 MHz clock
ioasic0 at tc0 slot 3 offset 0x0
le0 at ioasic0 offset 0xc0000: address 08:00:2b:xx:xx:xx
le0: 32 receive buffers, 8 transmit buffers
zsc0 at ioasic0 offset 0x100000
vsms0 at zsc0 channel 0
wsmouse0 at vsms0 mux 0
zstty0 at zsc0 channel 1
zsc1 at ioasic0 offset 0x180000
lkkbd0 at zsc1 channel 0
wskbd0 at lkkbd0: console keyboard
zstty1 at zsc1 channel 1
mcclock0 at ioasic0 offset 0x200000: mc146818 or compatible
asc0 at ioasic0 offset 0x300000: NCR53C94, 25MHz, SCSI ID 7
scsibus0 at asc0: 8 targets, 8 luns per target
device PMAF-AA  at tc0 slot 2 offset 0x0 not configured
tfb0 at tc0 slot 1 offset 0x0: 1280x1024, 8,24bpp
wsdisplay0 at tfb0 kbdmux 1
wsmux1: connecting to wsdisplay0
sfb0 at tc0 slot 0 offset 0x0: 1280x1024, 8bpp
wsdisplay1 at sfb0 kbdmux 1: console (std, vt100 emulation), using wskbd0
wsmux1: connecting to wsdisplay1
timecounter: Timecounter "clockinterrupt" frequency 256 Hz quality 0
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 2 lun 0: <nEC, DSE2100S, 0306> disk fixed
sd0: 2014 MB, 4092 cyl, 16 head, 63 sec, 512 bytes/sect x 4124736 sectors
sd0: sync (200.00ns offset 15), 8-bit (5.000MB/s) transfers
Kernelized RAIDframe activated
boot device: sd0
root on sd0a dumps on sd0b
root file system type: ffs

---
Izumi Tsutsui