[Vincent L, Hugo P, Rich M, Celine R]
On Monday, we noticed the following weird reading from the seismometers pods (pressure signals):
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T240 corner 1 & corner 3 read 0
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T240 corner 2 reads ~64 when other pressure reads ~70 (in kPa but we also have figured out that the calibration is wrong)
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L4C corner 3: Pressure reads 0, and diff 18
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GS-13 corner 3: Pressure reads 94 and diff -18
Checking at the pods, we were able to check:
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T240 corner 1 & 3 are actually not returning any voltage => pressure sensors dead
![crying crying](https://alog.ligo-wa.caltech.edu/aLOG/scripts/ckeditor/plugins/smiley/images/cry_smile.gif)
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L4C H3 could not be checked but the problem moved with the cable => pressure sensor dead
![crying crying](https://alog.ligo-wa.caltech.edu/aLOG/scripts/ckeditor/plugins/smiley/images/cry_smile.gif)
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L4C V3 had a normal readout=> pressure sensor live
![smiley smiley](https://alog.ligo-wa.caltech.edu/aLOG/scripts/ckeditor/plugins/smiley/images/regular_smile.gif)
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GS-13 V3 had a normal readout => pressure sensor live
![smiley smiley](https://alog.ligo-wa.caltech.edu/aLOG/scripts/ckeditor/plugins/smiley/images/regular_smile.gif)
At this point, that means that we need 2 T240 and 1 horiz L4C pod replacements.