Miller Dynasty 300DX problem, video inside.

[cruizer]

Unsure, as the earlier 300DX makes little mention on how the memorys are stored.

though it does tell you how to create or overwrite a program, perhaps thats what the operator should do instead of trying to use what I suspect is an existing one.

[marlon88]

Should I go and buy a 24v dc power supply and do the factory reset? The Miller tech guy told me that they did not encourage doing a factory reset. I don't know what he meant by that!

The manual has a section where it says how to clear a lock out mode, but when I choose between the 1 to 4 memory presets, it allows me to make changes so I am guessing that the machine is not locked.

Something strange happened.......... I removed the plug for the pedal to check it, it looked ok. When I installed it back and switched on machine I pressed the pedal and the flickering sound stopped!!!! I will try tomorrow to start an arc on aluminum on AC mode and see if the same thing happens. This is weird because the plug was inserted correctly and was tight!

Will keep you updated and let you know what happens tomorrow!

[SundownIII]

Don't you just love it when a guy "screams for help" and then just disappears, leaving everyone wondering what really happened.

[SundownIII]

Wonder if the OP got his Headspace and Timing issue solved?

[H80N]

Regardless of the resolution of this problem.. the info contained in it should be available in the "Dynasty Process Setup" sticky.... this is not the first time a dyn owner has had similar probs and will not be the last.....
Does look a lot like Operator Buttonology probs...... I have been outsmarted by my Dyns more than once myself....(200DX & 350DX) no shame to it... they are complex machines with nested menus and a sometimes less than intuitive inteface....

[ddockt]

spendy machine, wanted 250 but economy got me an older dial arc 250 hf, gota make do cheap as possible, looking for more up to date mig unit but economicly not in the near future

[cwlewis123]

I am really confused about open circuit voltage and what to set it on (low or whatever the other setting is). Can someone explain it in a way that a 3rd. grader would understand.

Also, I also don't have a clue why there is a voltage readout on the Dyn 200DX. When would I need to know this and how would I use this information? I'm signing up for a TIG class next semister so I won't have to continually show my stupidity on this great forum. I have learned more from here about things not really covered well in the manual.

[marlon88]

Hey Guys,

Sorry I did not post to this thread earlier.

I had to send the machine to a miller approved tech repair shop.

Here is what the tech guy told me trough email.

The welder has landed and we have diognosed the problem , There is a short diode on The AC chopper circuit which means the welder would not sustain an arc in AC. Basically the AC chopper is split into 4 sections and 'Chops' up the DC supply into DC+ then DC - , Then DC + then DC- thus giving an AC output. one of the two DC + circuits had a diode failure which made the machine work OK in DC ( which is always DC - ) but in AC the cycle that was missing caused the arc to break down. We have checked all other components in this circuit and all is OK so we can only put it down to component failure.

I got it repaired and is working beautifully now.

Thanks to everyone who helped me trough this thread,

Many Thanks and Best Regards,
Marlon

[marlon88]

I am still learning tig welding so I am still hoping that I will improve more with more and more practice . Here is a pic of the weld quality that I am able to do with the machine. Its a 3 inch 304 stainless exhaust down pipe which I am extending/modifying.