mike 109444
Member
- Messages
- 4,672
15 VDC sounds ok. It will be difficult to fault find any further with out a wiring diagram to be able to check the voltages at the connections to the pcb.
One thing you might try would be to disconnect one of the wires that goes to the coil of the contactor (and tape the end to make safe!) I know that when you press the trigger the contactor does not operate but you also say that one of the relays on the pcb keeps clicking even with trigger held on. If the relay stops clicking it could be that with the load from the contactor removed the circuit runs ok. This would point to a faulty contactor coil. If it still clicks then refit wire to contactor.
Next option would be the swapping around of the relays on pcb to see if one is faulty.
I have tried googling Kestra but don't get any relevant hits.
Only other option with a pcb with this much surface mounted components would be to contact someone like these people
http://www.technicalarc.co.uk/
They have a downloadable catalog that list that they do repairs on welder pcb's page 48 onwards.
One thing you might try would be to disconnect one of the wires that goes to the coil of the contactor (and tape the end to make safe!) I know that when you press the trigger the contactor does not operate but you also say that one of the relays on the pcb keeps clicking even with trigger held on. If the relay stops clicking it could be that with the load from the contactor removed the circuit runs ok. This would point to a faulty contactor coil. If it still clicks then refit wire to contactor.
Next option would be the swapping around of the relays on pcb to see if one is faulty.
I have tried googling Kestra but don't get any relevant hits.
Only other option with a pcb with this much surface mounted components would be to contact someone like these people
http://www.technicalarc.co.uk/
They have a downloadable catalog that list that they do repairs on welder pcb's page 48 onwards.