electronic repair

I had a Sole F63 that would power up OK, but when you try to start it would make a whining noise then throw error code E7. Previously I had followed the repair guide by mike_haben which did fix the issue the first time. A couple of week later, same issue, but the culprit was not one of the...

The output of the KL MMA 160 inverter igbt arc welding machine is 52 Volts and as it should be. The fan is also working. 4 High-Speed Switching Diodes (1N 4148 5T) diodes exploded on the Transformer Rectifier circuit card of the machine, I replaced them with new ones, but it still does not...