G'day, I've just bought myself an old CIG Transmig 195 and it may be in need of some spares. I was just wondering if anyone knew where I could get my hands on a manual? Failing a manual, if anyone out there has one of these welder, are you able to take a photo of the drive roll unit, so that I can compare it to mine? Welding Accessories & Spare Parts Description. National Welding has a wide variety of welding accessories and spare parts like unimig welders, with everything you could possibly need to help complete all your welding applications safely and easily.You can find everything from balancers to chipping hammers, connectors, earth clamps, tip cleaners, welding cables and more at very reasonable.
I picked this mig up for a song but was really after the other trinkets it came with.Previous owner said it simply 'stopped' and needed a new 'card.'
This is the burned component that fell off the card.
I googled about and found the AUD90 (!!!!!) replacement card. when i stood back up i had a re-google and saw that the burned component was the only part that ever failed. It was very consistently asked about on welding forums.It is a wire-wound resister, they fail quite commonly in a lot of DC-DC power supplies
I used a Jewellers eyepiece to read the rating (3.3ohms and 7watts)and was ecstatic to find that the component was locally available for AUD1.80. A nice little saving.
I actually got a 10watt as it takes more heat. The repaired card (below) was whacked into the mig and now sweeps through its range and at all power settings.
A little note, even the higher wattage resister is getting too hot to touch while welding, it obviously is heavily loaded so I can see why the original would burn with prolonged welding. Allowing it to cool between short welds would be prudent.
Most of the smaller 'hobby' migs are very similar inside. The resister is a different rating from make to make but the principals are the same.