low capillary voltage on 6420 QQQ

The capillary voltage on our G6420A QQQ is set for 3000V but the actual is around 40V and I am not getting peaks.  What is most likely wrong with the instrument?  Thanks

  • There could be a problem with the platinum end of the capillary or one of the canted coils springs is not making contact. Check the connections on the 2 wires at the top of the spray shield. If there is a connection there measure at that point. center wire should be 3K and the left wire or spay shield should be 2500

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