Hi All,
Our 19 year old Bruker TCI 800S4 H-C/N-D cryoprobe has a tuning problem. The
1H channel can be tuned and matched only between 819 MHz and 821 MHz, BF1
is 800.280. All other channels tune and match normally. I removed to ATM
unit and replaced it with a manual tuning unit and observed the same tuning
problem. I removed the cryoprobe and replaced it with a TXI (room temperature)
probe and 1H tuning and matching were normal. Bruker said the probe is
unrepairable due to lack of parts availability and age.
Does anyone know if there is a NMR probe expert who could repair the probe?
Best,
Jeff
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Received on Mon Apr 06 2026 - 08:39:35 MST