Miller Welding Tools - Page 6 - Popular Questions, Answers, Tips & Manuals

Have you stripped and cleaned out carburettor? sounds like a blocked idle jet?

Most common problem for no output is the brushes, you should also have approx. 3 ohms resistance across the slip rings. Can get you more info, but will require the serial number of the welder.

Check to see if the starter solenoid turns on a 12 volt test light when the ignition is held in the crank position.

More likely the transformer has a shorted winding.

Is that not a three phase unit?

Try here https://www.millerwelds.com/support/manuals-and-parts

Try here https://www.millerwelds.com/support/manuals-and-parts

PDF]owner's manual - Miller

https://www.millerwelds.com/files/owners-manuals/O403C_MIL.pdf

first unscrew the tiny tip at very end of torch (can be hot)!! then try to feed wire thru handle,gently shake cable as you do helps to feed wire thru cable , if successful you have allowed the amps to get too high for the feed rate (slow) and melted the tip closed , these tips are replaceable from miller and are not expensive

Your dialarc HF has a selector for polarity, DCEP (electrode positive), DCEN (electrode negative) and AC. DC TIG welding is done in DCEN only with the high frequency turned to start. When welding aluminum, you must be in AC with the high frequency turned to continuous. Other machines may be different, but that setup will be how you need to set that dialarc HF. The old school tungsten recommendation has always been the green or pure tungsten when welding aluminum on AC with a transformer machine, which is what you have. However, pure tungsten will not be a good choice for inverter style machines or when welding other metals besides aluminum. So instead of having multiple types of tungsten running around in your tool box, I use the blue or 2% lanthanated tungsten for everything. I find that it has excellent arc characteristics on both AC and DC, you can also sharpen it to a point when welding on AC, which is very useful in directing the arc when tacking up your aluminum job or starting out at low amps.

the following link has millers welders owners manuals http://powertool.manualsonline.com/manuals/mfg/miller_electric/miller_electric_welder_product_list.html

it could be a stop solenoid hole or a simple oil filler hole that the plug has fallen out of contact an onan service center and ask the service person what would be missing

that indicates bad short in the unit could be a wire bare into the unit or a transformer failure it is happening on the utility power side of the unit and not on the lower votlage section take it in for an electrical check and quote

try electrozad supply,waffles electric,windsor factory supply,praxair welding supply,liquid air welding supply,future weld supply good luck

Had the same problem with mine but mine isn't miller and don't know if your's is built the same but if you access the inside of the machine there's there's a large copper spool inside and that wire feed handle is powered through it. The connection heats up over time and becomes a short. I re spliced mine then soldered it and then cut piece of copper tubing and crimped it around the connection and soldered that as well. Corrected the problem and I tried pretty much all listed solutions other then this first. Tried the new liner in the torch, the new tip and clamping the wire feed assembly with a clamp instead of the tensioner. All failed. I stumbled on to the fix accidentally when I was trying to install a more heavy duty fan. Hope this helps. Good luck.

Best to get the make and model of the welder and go from there.

internal short-- time to take it in for a electronic insulation check

Remove any paint or rust and make sure your ground clamp has a firm grip on whatever your welding or welding on and a nice clean surface check all welding leads

could be a faulty power control swotch I am inclined that the voltage regulator the controls the amp out put is faulty Take it in for a specialist diagnosis to a welder repair shop

call 866-924-7427 or 866-935-3370 AirGAS for information on the nearest store,because you will need a professional estimate. Good Luck