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Does anyone have an idea?
Discussions about GC-MS, LC-MS, LC-FTIR, and other "coupled" analytical techniques.
LALman wrote:
My main workhorse GCMS 6890N mainboard died of the Thermal MUX failure on Friday. I was able to get a refurbished mainboard shipped overnight from FSA on Saturday morning. We put it in professionally, observing static protocols. The GC booted right up and all seemed great until we noticed that gas flows were not being controlled. No matter the pressure called for, the flow remained zero. This is the second time this mainboard has failed. Last year June 21 it failed and I got a brand new mainboard from Agilent. I installed it an eveything functioned perfectly. So, I am at a loss as to why this board is not controlling carrier gas pressure and flow.
Does anyone have an idea?
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