[HECnet] VAXStation 4000/90A power supply fan

No choice but to drill it out. Unless you'd rather buy another p/s. Hans -----Original Message----- From: Fred <fcoffey at misernet.net> Sender: owner-hecnet at Update.UU.SE Date: Sun, 20 Nov 2011 14:08:23 To: <hecnet at Update.UU.SE> Reply-To: hecnet at Update.UU.SESubject: Re: [HECnet] VAXStation 4000/90A power supply fan On 18/11/11 13:29, hvlems at zonnet.nl wrote: You could try and apply e little graphite powder in the noisy fan bearing, better yet use a molybdenium based lubricant: these do not conduct electricity. I tried some good old moly lubricant the guys use at the copier shop where I work - it made a slight difference but not much. The bearing is obviously shot. The fan is *riveted* into the power supply. What the heck? On Fri, 18 Nov 2011, Mark Wickens wrote: I'd caution against running it with one fan - I think the point of having two is in case one fails, and like hard drives it does occasionally happen. For now, I am running it with one fan, and it being only 60-65F in the house (and the computer office) the VAX is not running hot. I removed one of the drives, since I really wasn't doing anything with it. (it was a pull from a BA356 canister) Looked half-height to me, although I do have some smaller in size drives that I may swap in. At some point I'm going to source new fans and then try to pry the old ones out. Other than that when I had the power supply apart, no domed caps, everything is quite clean (and even cleaner when I gave it a date with the shop air compressor). I have two 90's (not 90A's) in the closet I could press into service but I really do not want to trash this 90A for just missing one fan. Thanks for the responses all. Fred ---- Lets call it for what it is - "legacy" is a term that people use in a polite but derogatory manner to imply that the future direction they prefer is not that which they view as the current direction.