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- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!matt.ksu.ksu.edu!news
- From: xx123yyy@matt.ksu.ksu.edu (Brian Gregory Howard)
- Newsgroups: comp.sys.apollo
- Subject: Re: Dead power supply (?) on DN10000
- Date: 31 Aug 1992 18:35:54 -0500
- Organization: Kansas State University
- Lines: 50
- Message-ID: <17uacqINNl0e@matt.ksu.ksu.edu>
- References: <1992Aug31.161210.2244@athena.mit.edu>
- NNTP-Posting-Host: matt.ksu.ksu.edu
-
- ccount@boltzmann.mit.edu (Dr. Craig A. Counterman) writes:
-
- >I looked at the LEDs people told me about in replys to my earlier
- >post. They indicate "VNR under voltage."
-
- >So, any way I can repair this myself or at least resurrect it for a
- >few more months? Any ideas which component failed, and sources for
- >this independent of Apollo? Any companies with used or repaired
- >Apollo parts?
-
- Ok, here goes my personal H??l!
-
- 1. 5V under voltage problems (the beginning).
- -This was our first power supply problems with the DN10000. It was
- temporarily fixed by cleaning the pins on each of the power supply
- bricks.
- -After several months, just cleaning the pins on the bricks no longer
- made a difference so I tried a chemical called CRAMOLINE to improve the
- conductance of the pins on the bricks. This worked for about one month
- and then the CRAMOLINE turned black and the DN10000 died.
-
- 2. 5V over voltage (same DN10000).
- -in a fit of rage, I tinned (soldered) each pin on each power brick. I
- DID NOT SOLDER THE BRICKS INTO THE POWER SUPPLY PWB. This worked for
- about 2 days before the DN10000 died showing 5V over voltage.
-
- -I almost died thinking that I would have to buy the $60k boat anchor
- (I think the DN10000 makes a nice end table myself). Using some really
- strange logic, I removed one of the 5V bricks and booted. It has now
- been about one month and the DN10000 is still running (I even compiled
- X11R5 on it - minus the server, of course).
-
- I am not sure what my next move will be when the DN10000 dies again, but I hope
- that the above information will help someone keep there DN10000 alive until
- they can buy a Macintosh (Ha Ha).
-
- By the way, my wife does not like the idea of using the DN10000 as an end table.
-
-
- good-luck
-
- Brian G. Howard
- brian@grace.ecc.ksu.edu
- xx123yyy@matt.ksu.edu
-
- ------------------------------------------------------------------------------
- They're comming to take me away, ha ha, he he, to the funny farm where life is
- beautiful, and I'll be happy to see those nice young men in there funny white
- coats, and they're comming to take me away ....
-
-