- Reaction score
- 13,478
Without ever having seen the machine, I think an element is the most likely cause, in which case the fuse might have to be large enough that it won't reliably co-ordinate with the MCB.
One strategy that bypasses further troubleshooting and might or might not be economical would be to change the elements and any other likely troublemakers and give the machine back to the customer in the knowledge that there's a 75% chance you've removed the fault, despite having no proof of which part it was in. A lot of amateurs think they can fix vintage electronics this way - replace all 100 capacitors and hope - although it tends to add more faults than it removes. In the hands of someone who knows the machines, a shotgun repair can be worth a try when normal faultfinding runs out of enthusiasm.
One strategy that bypasses further troubleshooting and might or might not be economical would be to change the elements and any other likely troublemakers and give the machine back to the customer in the knowledge that there's a 75% chance you've removed the fault, despite having no proof of which part it was in. A lot of amateurs think they can fix vintage electronics this way - replace all 100 capacitors and hope - although it tends to add more faults than it removes. In the hands of someone who knows the machines, a shotgun repair can be worth a try when normal faultfinding runs out of enthusiasm.