loss of signal on QUattro ultima
Posted: Sun Feb 02, 2014 1:10 am
We have a Quattro ultima that suddenly lost signal in the middle of a run, I infused A Juice at 10 ul/min and could see a little bit of the 2035 in both ms1 and ms2. After venting and powercycling the instrument all masses looked good and I made some injections using a method we run twice a week. It looked great for a few injections then the signal died again, the A juice showed the same symptoms. After venting and powercycling it again worked for about a half an hour and died. Anyone have any pointers on where in the instrument the problem might be? All the readbacks look normal, parking either MS1 or ms2 at 2000 the rf voltage flips around 350 to 500 as it normally does. The detector readbacks all look okay too.