wire feed problem

[wgjeep81]

I was given a 1979 miller matic 200. shop that had it said it worked great. fan works but wirefeed does not turn when trigger is pressed. Deltrol Control clicks and sparks when trigger is pressed. machine is running off a 220 /40amp THANKS FOR ANY HELP

 

[madkayaker]

are you getting voltage to the feed motor?

 

[R BEADLE]

I was given a 1979 miller matic 200. shop that had it said it worked great. fan works but wirefeed does not turn when trigger is pressed. Deltrol Control clicks and sparks when trigger is pressed. machine is running off a 220 /40amp THANKS FOR ANY HELP

disconnect the wire feed motor and wire a battery charger 12v to the feed motor terminals if it spins at good speed and you cant stop the motor with your fingers then your motor is o.k . the problem will more than likely be with the pcb , pcb's hate the damp and if its been in damp atmospherics ( work shop ) then it can short and blow components on the pcb . i usually give mine a squirt of wd40 in autumn to keep the damp off . if your pcb is ok then there may be a fault with the low voltage transformer that powers the wire feed motor etc .

i have a similar problem im trying to sort out on an old romarc 200 mig , its a very well made welder with 2 copper wound transformers and a choke , its also fitted with 8 capacitors and twin cooling fans . one on each transformer . i managed to get the wire feed working but its under powered , like it isnt getting enough amps as it wont feed the wire through under load and i can stop the motor spinning between my thumb and finger , yet when the motor is wired to a battery charger 12v i cant stop the motor spinning . im going to investigate further tomorrow with amp metre . if your miller is made in the usa then it will be top quality and built to last too , well worth repairing as they don't make them like that any more .