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Powcon 400ss welder

Low output and ticking sound

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Got anyone around with a multimeter? You need to see where the power drops -- primary or secondary side, control circuit, etc.

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Ranger 10,000 has low weld output and ac output

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try cleaning the ground inside the welder. and make sure you have a good power supply ie. power cord. check the transformer for continuity and clean all the contacts ( are you sure the power inverter diodes are only passing current one way and are not "open" )

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Powcon sm400 welder fluctuates amperage. please help

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Miller welder 330a/bp it will not weld in D/C straight or reverse no ark but will work in A/C its like there is very low volts I was welding and then could not strike a ark

It's likely that your pedal is the problem. Pull the cover and check it electrically - these have been problematic in the past. You can further troubleshoot by selecting constant output and test the output.

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No or little ac output

By ac you mean receptacles, not ac welding? 
If so what about welding output on AC (DC)?

If welding is OK then you may have breaker or fuse problem.
If welding output is also low or no output your problem is the generator.
You should check your gen rpm to be normal. If so you may have field problem: rectifier, AVR etc.
If you can measure the field DC voltage at rated rpm, if it is missing (very low) try to find any circuit broken.
If you do not succeed answer this instruction in order to give you more.

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1 Answer

No welder output

Sounds like a control board problem, would much more info to diagnose.

May 29, 2009 | Lincoln Welding Tools

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Dead unit Cyclomatic PowCon 300 SM

Well John Henery I'm new to this type of correspondence,but I'll give it a try!

#1 Disconnect from power & remove the 10 bolts holding the cover.(There should be diagams by each of the 3 jumper sets to be changed.)
#2 Standing at the front look to the rear left ,and you should see 4 studs. (Dotted line=buss jumper)
x----x x----x x x----x x
240V 480V

#3 At the front center down low there will be 4 more studs.
x----x x----x x x----x x
240V 480V

#4 On the right rear there is a vertical board with 10 studs.
x x x x x x
| | |
| | |
x x x x--------x x
| | |
| | |
x x x x--------x------x
x x
(240V) (480V)

As far as your no power problem look at the main power switch. Of the wires that go to the welder, 3 will go to the power board, and 2 to the control board. When you hook the power cord to the house power you need to make sure to use the 2 cord conductors that will also feed the control board.

I do have an operator's manual for a 300SM, contact me at ,and I'll get you a copy.


Apr 10, 2009 | Miller Welding Tools

1 Answer

Ticking sound

ticking sound (like a Watch) coming from around the Flyback Transformer but I don't see a spark is called EHT voltage . if eht voltage is ok 1 check filament is glowing or not if it is ok check voltages on crt. 2 if it is ok check luminance section in chroma section. if filament is not glowing check for low eht due to hor section check power supply output also. good luck

Sep 18, 2007 | GE 25GT270 TV

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