I HAVE A MILLER CRICKET THAT SOMETIMES WHEN TACKING FEEDS WIRE AND WON'T STOP UNLESS YOU UNPLUG THE WELDER.AND WHEN WELDING ON A HOTTER HEAR RANGE IT STICKS AND WON'T FEED WIRE FOR ABOUT 15 SECONDS.I TOOK THE COVER OFF AND THERE IS A RELAY THAT IS CLEAR AND YOU CAN SEE IT ARKING INSIDE WHEN YOU TRIGGER IT.IS THIS PART BAD?CAN I PURCHASE ON? WHATS THE PRICE? THANK YOU
Welding Tools - Miller
Answers & Comments
Good eye. Yes that relay is CR1. It controls power to the main transformer, power to the feed motor, as well as providing a brake for the motor when the trigger is released. CR1 is controlled by the gun trigger. The contacts in CR1 will burn (the arcing you seen in the relay) and cause the problem you mentioned. The part number for the relay is #120706. All this is for the 70 amp model. The 90 amp model has a second relay with a small PC Board. It is a little bit more complicated and more could be the problem. I am enclosing the manual for the Cricket. It includes both the 70 amp and the 90 amp models. If you have the 90 amp model, the repair will be different and will require more advanced troubleshooting. Also. there are two other models for the cricket, the 200 and the XL, both having different parts. Now having said all, if you feel confident , the actual repair is not complicated but you have to understand there is a potential for shocking due to high voltage.. If you are going to do the repair yourself, make sure the welder is unplugged and that no one will be able to plug it in while you are working on it. You will have to check with a Miller distributor for pricing and availability. https://www.millerwelds.com/files/owners-manuals/O1307_MIL.pdf