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- Posts: 1
- Joined: Wed Sep 01, 2021 11:09 pm
We initially set up the instrument after having to swap it with an old 5973. This 5975 was received from another lab a few years ago and had not been used since we bought it.
After setting it up and autotuning once the first autotune looked great so we calibrated the instrument. within three days we did a "generate report" which we do before every analytical run and the masses of 219 and 502 had shifted significantly. we then generated reports every day for a week and watched as those masses slowly drifted until they were out of the frame of view.
Our Agilent tech immediately suspected the sideboard as a defunct one often causes these Mass Axis problems. So we purchased a new side board (for 5975 and 5977 A/B). After installing the new sideboard we repeated the same experiment running an autotune, which looked fine, and then generating reports everyday. the exact same shifting occurred.
We then swapped the sideboard with the sideboard from our functioning 5977A to test if the new sideboard was the issue.
This did not resolve the problem.
Does anyone have any suggestions on next steps or has anyone seen this kind of problem before?
thanks