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Re: Reconstructing an AT&T 7300

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On Wednesday, June 17, 2015 at 4:45:07 AM UTC+3, DoN. Nichols wrote:
> On 2015-06-15, vlaarom@gmail.com <vlaarom@gmail.com> wrote:
> > On Friday, June 12, 2015 at 3:14:55 AM UTC+3, DoN. Nichols wrote:
> >> On 2015-06-11, vlaarom@gmail.com <vlaarom@gmail.com> wrote:
> >> > Hello All,
> >> 
> >> > I've found an at&t 7300 and disconnected floppy, hdd and display. When
> >> > I power it up relays in modem are going crazy.
> >> >
> >> > Why  the relays are going crazy?
> >> 
> >> 	Well ... it is most likely the connector on the power supply.
> >> You already have it apart, if you have all of those disconnected, so you
> >> can look easily.
> 
> 	[ ... ]
> 
> >> 	Of course, it could be something else, but this is what I would
> >> check first.
> 
> 	[ ... ]
> 
> > Thank you.
> > I've replaced power supply with a pc atx power supply. Relays are normal now.
> 
> 	O.K.  So likely the power supply connector and/or pins. (Did you
> bother to look at the underside of the power supply for melted away
> solder around the pins?  Also look for "cold solder" joints -- the
> solder looks frosted instead of shiny.  If you see that, remove as much
> solder as you can from that junction and then flow fresh 63/37 lead-tin
> solder to get a clean smooth joint.
> 
> > I'm trying to boot at&t, but i see only running green rectangles. All 4 leds are on.
> > Lithium battery is dead.
> >
> > I will try to replace battery. I think it will solve boot problem.
> 
> 	The only difference that will make will be that if you manage to
> get it to boot twice, it will remember the date from the first boot.
> That cell does *nothing* else than run the clock chip.
> 
> 	So -- the marching squares usually come from the inability to
> find a boot image on either the hard disk or the floppy.  Are you trying
> to boot from the hard drive?  If it was in there while the system was
> getting very glitchy power, as evidenced by the relays, it is almost
> certainly not bootable now, and will need to be reformatted and
> reinstalled.
> 
> 	Do you have the floppy set for installing the OS?  There is the
> basic set, and the development set as an extra-cost option, which gives
> you things like compilers, a somewhat better default editor (vi/ex
> instead of ed) and a number of other things.  There is a floppy set in
> the original set which handles encryption, and happens to include a
> version of vi/ex which includes encryption.  It first checks for the
> presence of an installed vi, and updates that if so -- otherwise it
> skips it.  This means that if you want the updated vi/ex, you must
> install the development set before installing the encryption set.  (The
> encryption was separate, because it could not be exported back then. :-)
> 
> 	Good Luck,
> 		DoN.
> 
> -- 
>                   Remove oil spill source from e-mail
> Email: <BPdnicholsBP@d-and-d.com> | (KV4PH) Voice (all times): (703) 938-4564
>    (too) near Washington D.C.     | http://www.d-and-d.com/dnichols/DoN.html
>            --- Black Holes are where God is dividing by zero ---

I don't have a floppy set. There are images here(http://bitsavers.trailing-edge.com/bits/ATT/unixPC/). Can i use it?

if so can i attach floppy disk from at&t to old PC?
Can i use dd to put *.IMD file to floppy?

Thank you

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Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-06-11 05:38 -0700
  Re: Reconstructing an AT&T 7300 "DoN. Nichols" <BPdnicholsBP@d-and-d.com> - 2015-06-12 00:13 +0000
    Re: Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-06-15 11:01 -0700
      Re: Reconstructing an AT&T 7300 "DoN. Nichols" <BPdnicholsBP@d-and-d.com> - 2015-06-17 01:43 +0000
        Re: Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-06-17 00:18 -0700
          Re: Reconstructing an AT&T 7300 "DoN. Nichols" <BPdnicholsBP@d-and-d.com> - 2015-06-18 03:42 +0000
            Re: Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-06-25 01:44 -0700
              Re: Reconstructing an AT&T 7300 "DoN. Nichols" <BPdnicholsBP@d-and-d.com> - 2015-06-26 02:23 +0000
  Re: Reconstructing an AT&T 7300 Convergent MightyFrame <mightyframect@gmail.com> - 2015-06-13 11:46 -0700
    Re: Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-06-15 11:01 -0700
  Re: Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-07-07 01:24 -0700
    Re: Reconstructing an AT&T 7300 "DoN. Nichols" <BPdnicholsBP@d-and-d.com> - 2015-07-12 01:06 +0000
      Re: Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-07-15 07:46 -0700
        Re: Reconstructing an AT&T 7300 "DoN. Nichols" <BPdnicholsBP@d-and-d.com> - 2015-07-18 03:53 +0000
  Re: Reconstructing an AT&T 7300 vlaarom@gmail.com - 2015-08-04 04:36 -0700
    Re: Reconstructing an AT&T 7300 "DoN. Nichols" <BPdnicholsBP@d-and-d.com> - 2015-08-09 02:11 +0000
      Re: Reconstructing an AT&T 7300 "vla...@gmail.com" <vlaarom@gmail.com> - 2021-12-13 14:00 -0800

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