Hello, I have an old Agilent Ion Trap G2445D SL model which has worked super until recent. The turbos spin up just fine, but the high vacuum gauge does not turn on. I had the mini Ion gauge repaired because of course it is almost impossible to purchase parts that I can rely on. I can only assume that the gauge is functioning correctly after the repair. Does anyone still have this instrument or a mini Ion gauge that they know works? When I click on what can be the diagnostic suggestions, it is suggested that the problem could be either the min- ion gauge or the vacuum Interface GEVI. Any suggestions would be helpful.