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User name R. Michaels
Log entry time 23:49:09 on November 15, 2008
Entry number 249083
This entry is a followup to: 249026
keyword=notes after raster repair (TECH)
Alex and I took swapped out raster supply #5 for #7.
#5 was the one with an old-style 24-V supply and the R-C bridge that
was supposed to short out transients. #7 is the one with the new-style
beefier 24-V supply. (Both design improvements were to be tried and
compared. There's a long history of these 24-V supplies failing.
And it seems to always be in the middle of the night on a weekend, lol).
1. I have 10+ spare 24-V supplies in my office. Bill Gunning has them
too. Supply #5 remains in the hall near the survey rack. Jack, can
you repair this sometime ?
2. The fancy HEPA-filtered cooling seems to not be working. No
noticeable air flow and no sound. It is plugged in. We did the
old trick of leaving the door ajar and putting a fan to cool. Can the
techs check the fancy cooler ? (There is again a history of cooling
appearing to reduce failure rate.)
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