Re: VAX 4000 PSU (H7874) Schematics

2018-06-08 Thread Bill Degnan via cctalk
I have one or two mostly new 4000 supplies here, plus two working 4000's. Did not know until recently this was an issue, I guess I have been lucky. b On Fri, Jun 8, 2018 at 9:04 AM, Holm Tiffe via cctalk wrote: > Aaron Jackson via cctalk wrote: > > > > On Thu, 7 Jun 2018, Aaron Jackson wrote: >

Looking for an ex-Sun employee; Alan Charlesworth

2018-06-08 Thread JP Hindin via cctalk
Hey all; I'd love to talk to Alan Charlesworth, who used to work for Sun and (I believe) CRS before that. I'm interested in his perspective on some historical happenings and Sun design work. If anyone knows him and might be willing to get me in contact with him I'd very much appreciate it.

Re: VAX 4000 PSU (H7874) Schematics

2018-06-08 Thread Holm Tiffe via cctalk
Aaron Jackson via cctalk wrote: > > On Thu, 7 Jun 2018, Aaron Jackson wrote: > >> The VAX turns on and the status LED stays on F. The DC lamp does not > >> illuminate on the PSU. 5V rail appears fine but there is nothing from > >> the 12V rail. There were some *very* dodgy looking caps which I hav

Re: VAX 4000 PSU (H7874) Schematics

2018-06-08 Thread Aaron Jackson via cctalk
Thanks Bill. I emailed him, some decent advice but mostly prices :) Aaron Bill Degnan writes: > There is a guy named at Joel from global-itcorp.com who has experience with > these, he may have an idea. Tell him you spoke with Bill Degnan. > b > > On Thu, Jun 7, 2018 at 3:49 PM, Aaron Jackson v

Re: VAX 4000 PSU (H7874) Schematics

2018-06-08 Thread Aaron Jackson via cctalk
> On Thu, 7 Jun 2018, Aaron Jackson wrote: >> The VAX turns on and the status LED stays on F. The DC lamp does not >> illuminate on the PSU. 5V rail appears fine but there is nothing from >> the 12V rail. There were some *very* dodgy looking caps which I have >> replaced, and some *very* exploded M

New Listings for Sellam's Collection Sales

2018-06-08 Thread Kurt Hamm via cctalk
I, too, have emailed Sellam with no response. But, I guess I am adding to the "broad-based whine" Wow. Kurt. -- Forwarded message -- From: Sellam Ismail To: Randy Dawson Cc: "General Discussion: On-Topic and Off-Topic Posts" < cctalk@classiccmp.org> Bcc: Date: Wed, 6 Jun 2018

Re: VAX 4000 PSU (H7874) Schematics

2018-06-08 Thread Christian Corti via cctalk
On Thu, 7 Jun 2018, Aaron Jackson wrote: The VAX turns on and the status LED stays on F. The DC lamp does not illuminate on the PSU. 5V rail appears fine but there is nothing from the 12V rail. There were some *very* dodgy looking caps which I have replaced, and some *very* exploded MOSFETs, whic