Hi
A LC-MS 6490 went down during the weekend. I turned on, it blinks on orange for a minute or so, then red light blinking, makes one valve noise, and nothing else.
If I start Mass Hunter, it shows rough pump at 3.5E+0 (Agilent told me 4 should be good enough to start the Turbo).
Turbo are moving 10%-30% up and down.
I tried to turn off/on several times, but the MS always do the same (orange/red/valve noise)
We switched the two rough pumps, but Agilent said it is enough vacuum.
Not sure if this is related, but Mass Hunter show a warning message "ion source mismatch", when the right ion source is selected.
Any suggestion what could I try?
Thanks