MS fault with 5977B-solid red LED

Question

Hi, I cant seem to get the temps on the MSD to come on and I am gtting a solid red LED fault. 
 It all started when I changed a column. 
 The MSD pumpowns ok with turbo 100% 
 So, I rebooted, but the MSD LED blinked red and then solid red and showed a fault on the front Panel. 
 I am using MassHunter and when the tune file is loaded the set temps for Quad/Source are OK, but the actual temps are defaulting to over 500C? These are obviously not real. 
 Also, if I press the vac control icon the control panel momentarily open & shuts. 
 I have tried 
 1. resetting the set temps, but nothing happens. 
 2.I have also rebooted MSD (also tried rebooting all peripherals including masshunter at sametime). 
 3. I have tried above on the GC front panel & through MassHunter software 
 Anything else I can try? 
 
 Thanks for any help.

paulsalverda · Accepted Answer

Temperature readings over 500 indicate a disconnected or open sensor. Vent again and check all of the ion source connections - there are four wires from the repeller heater/ sensor and four from the quadrupole heater/sensor that connect to the ceramic source connector board. The two larger ones are the heater and the two smaller are the Platinum Resistance Thermometer. Make sure that these are all connected properly. 
 
 If the cables connecting the analyzer to the side board were plugged in while the power was on the side board on the analyzer is probably damaged.

MS fault with 5977B-solid red LED

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