We have an issue with our Seho Wave solder machine. The machine is an 8040C, early 90's model.
The problem is that continues to heat the solder up, even once it has reached its specified temp.
If we set it for 250 degrees, it will go to 250 then continue up to 350. It starts to throw out solder from the bath.
The display and heaters seem to be working. Does anyone know what regulates the temp of the solder.
The information we have for the machine isn't a great help.