仪器是ICP-OES,PE7000DV,点火几分钟后自动熄灭，弹窗提示如图1：
重试几次点火后，后又弹出过图2，图3提示，问题出现几天了，希望高人指点！



“Current through power transistor out of tolerance.

This problem may be due to a damaged transistor requiring a service visit or it may be due to improper plasma conditions.

Try the following:

Observe the plasma discharge during ignition through the viewing window. If the plasma lights, but then extinguishes right away, check the argon flows, torch condition, and test for air leaks.

? If the plasma is being blown out of the torch or is unstable during ignition, then check for proper argon flow and air leaks.

? If the plasma is stable during ignition, but still extinguishes, one of the transistors may have been damaged and must be replaced by service.

Try again to ignite the plasma. If you are not successful after several trials, contact PerkinElmer service and arrange a service visit.