RE: VAXstation 3100 power supply

2020-06-08 Thread Dave Wade via cctalk
; From: cctech On Behalf Of Peter Hicks via > cctech > Sent: 08 June 2020 15:10 > To: cct...@classiccmp.org > Subject: VAXstation 3100 power supply > > Hello > > I have a couple of VAXstation 3100s - a M38 which boots but has no output > on the console port, and another

Re: VAXstation 3100 power supply

2020-06-08 Thread Peter Hicks via cctalk
d I have had > an opto-isolator fail. > Dave > > > -Original Message- > > From: cctech On Behalf Of Peter Hicks > via > > cctech > > Sent: 08 June 2020 15:10 > > To: cct...@classiccmp.org > > Subject: VAXstation 3100 power supply > > > >

VAXstation 3100 power supply

2020-06-08 Thread Peter Hicks via cctalk
Hello I have a couple of VAXstation 3100s - a M38 which boots but has no output on the console port, and another model which has corrosion on the motherboard and a PSU which doesn't power up correctly. The voltage on all of the M38 PSU's pins is OK except for pin 7 (brown) which is +3.5v to +5.25