Recently, FEI engineers carried out a PM maintenance. He also replaced the old filament with a new one. The new filament worked well. During testing, a lens problem showed up. The engineer has been trouble shooting and ordering parts for some days. Lens power supply units were replaced together with lens control boards today. He is going to achieve a good vacuum tonight and do a test tomorrow. I expect that the TEM will be up in a couple of days.
I am going to schedule a training session soon after the TEM is fully up.