5973 Tune Failure

Thanks Paul.  PFTBA vial full, valve audibly clicks and I swapped out to another valve just to be sure.  Filaments may be suspect but visually look ok and show continuity with multi meter.  Vacuum with column installed is 1x10-5.  Source cleaned couple months ago but very little sample load.  Pump oil only couple months old.  I blanked the transfer line taking the GC out of the equation, still same error.  

I'm really thinking side board or HED power supply problem.

HED Power supply - in Manual Tune, turn the HED off, then turn the EMV up -  maybe two hundred volts higher.  Can you see any peaks at all in Spectrum Scan, PFTBA on, Filament one on?  Filament two on?    Turn the AMU Gain and Offset to zero.   Any peaks at all in the Spectrum Scan?

Stupid question for the day......in manual tune, I see HEDEnab ON, but it doesn't appear to be a parameter that can be turned off?

sorry. 5973 on Chemstation, been a while.  In Manual Tune on the command line, type this:    MSPARM HED,,0    that turns it off    and then    MSPARM HED,,1    will turn it back on.

sorry. 5973 on Chemstation, been a while.  In Manual Tune on the command line, type this:    MSPARM HED,,0    that turns it off    and then    MSPARM HED,,1    will turn it back on.

EMV taken stepwise to 2800 with HED off.  No peaks seen at all.

If you're in the US - 800-227-9770 will be faster. Now turn the HED back on and step up the EMV... Peaks?  If none still -- then it's smartest to talk live with an Online Technical Support Engineer.

Thanks much Paul, really appreciate your help and advice.