Interesting Manoj, exactly what has been happening here although we have never got to element failure. The puzzle is that nothing happened for a while then it all came at once. There is another machine with the same probe that is perhaps used less but has not given any reported problems. Could this be a clue to actual probe defect? Yet the company have checked, repaired and passed it. This is a Pie Data 485 Anser, probe is 3.5Mhz R40.
