Can anyone buy this for us? http://m.ebay.com/itm/282043737312
I wrote a few weeks ago asking if anyone had any info on a Decserver 300. This is a followup with useful info for future troubleshooters. The issue was that the device was DOA. Probing with a meter revealed that there was no regulated output at 5, 12, or -12 on the low voltage side of the power supply. With no obvious faults I recapped it to no avail. Since there are absolutely no schematics to be had, I wasn’t interested in further troubleshooting the PSU board. I was able, however, to determine which pins were the -12 and ground and then, through deduction based on amp output of the board, which were the +12 and +5. Hooking up a bench supply to the proper pins the Decserver works just fine. Pinout for the ribbon cable from the PSU to the board is below. The board does not have any indicators for which pin is which number wise. For this reason I am numbering pin #1 as the pin closest to the edge of the board: 1, 2, 3, 4: 5 volts 5, 7: ground 6: key 8, 9: +12 volts 10-14: ground 15, 16: -12 volts Best regards
On 05/24/2016 07:54 AM, David Hoelzer via vcf-midatlantic wrote:
I wrote a few weeks ago asking if anyone had any info on a Decserver 300. This is a followup with useful info for future troubleshooters.
The issue was that the device was DOA. Probing with a meter revealed that there was no regulated output at 5, 12, or -12 on the low voltage side of the power supply. With no obvious faults I recapped it to no avail.
Since there are absolutely no schematics to be had, I wasn’t interested in further troubleshooting the PSU board. I was able, however, to determine which pins were the -12 and ground and then, through deduction based on amp output of the board, which were the +12 and +5. Hooking up a bench supply to the proper pins the Decserver works just fine.
Pinout for the ribbon cable from the PSU to the board is below. The board does not have any indicators for which pin is which number wise. For this reason I am numbering pin #1 as the pin closest to the edge of the board:
1, 2, 3, 4: 5 volts 5, 7: ground 6: key 8, 9: +12 volts 10-14: ground 15, 16: -12 volts
Handy info, I've archived this. Since the -300 is a damn fine terminal server and there don't seem to be many around, it might not be a bad idea to try to fix that power supply. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
Not there? On Tuesday, May 24, 2016, Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Can anyone buy this for us?
Now I see it. Yikes! I wish. Nice system, though. On Tue, May 24, 2016 at 8:17 AM, Dean Notarnicola <dnotarnicola@gmail.com> wrote:
Not there?
On Tuesday, May 24, 2016, Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Can anyone buy this for us?
Wow! If I had the money would buy it. On Tuesday, May 24, 2016 9:03 AM, Dean Notarnicola via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> wrote: Now I see it. Yikes! I wish. Nice system, though. On Tue, May 24, 2016 at 8:17 AM, Dean Notarnicola <dnotarnicola@gmail.com> wrote:
Not there?
On Tuesday, May 24, 2016, Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Can anyone buy this for us?
participants (5)
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Bob Aviles -
Dave McGuire -
David Hoelzer -
Dean Notarnicola -
Evan Koblentz