[Dsg-hallb_magnets] [New Logentry] Follow-up Re: CERNOX Temperature Sensors not reading (LV Chassis #4)

beng at jlab.org beng at jlab.org
Fri Oct 6 11:00:03 EDT 2017


Logentry Text:
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Same as with the solenoid earlier, the Q0131 board blew the +12V fuse taking out all the Cernox sensors on this chassis.

The fuse in turn blew because the C34 capacitor failed; this is a filter cap between +12V & GND and it failed by causing a hard short between the two.

This PCB has been replaced with a spare and all Cernox sensors are back online. Armen from Fast Electronics has already removed the failed capacitor so we can do studies with a board minus the filtering in the future.

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3487421
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