Ok it's fixed , sea dog you were correct, my inferior soldering skills were the problem. I had a friend look at the pcb (they repair radio pcb,s for a job) and she said that the pcb had a track on the top side, that you could not see unless you held it up to the light, aswell as the obvious...
In my naivety I just looked up a finder relay 45/71, I read online that the original finder relay 45/69 was no longer available and that the 45/71 from RS was a direct replacement, is this relay incorrect?
Hi Mike
Thanks for taking the time to reply.
The relay I replaced is 24v same as the old one, I did check all the markings on the new relay to be sure and it is all correct.
I have attached pics of the pcb with the new relay fitted as requested.
Thanx again.
My pro mig 170 has decided to misbehave, initially the gas stayed running & the wire stayed live without pulling the trigger. I tested a few items with the multimeter and discovered that the finder relay 45/69 was stuck. I then discovered that this is a common fault and replacing the relay with...