200DX no high frequency start

[jake]

Yeah I'm waiting for the 280 also....oh well my 280 fund is depleted now......

[jake]

Miller said this shop was the closest Miller service center, so i would kinda think they would be trained, but I can't say for sure I do have my doubts.

[jake]

Well now they are saying the arc start board is cooked too, I wonder what will be next. This has really made me doubt Miller, they made a machine that has self destructed and have no idea why. I wonder if the boards are sitting there cooking when the fan is not running???? I would rather have to...

[jake]

Have you seen a part number on them? I was going to call my rep at allied electronics and see if they have the exact one. I talked to him earlier and they have some trench structured IGBT's on hand I just don't know the full specs. I am worried if this one has failed when is the other on going to...

[jake]

I am going to have them fix it since they are going to warranty it also. I am going to get the old parts back. We have a board rework team here at work, and with there help I want to find out what failed and repair the board. On the IGBT once I can find out what the specs are on it they are not hard...

[jake]

The shop just called me. One bad IGBT $350 and One bad board $75. $130 labor They said the HF works its just the other problems causing it not to work. They said that is why I was having so much of a problem trying to lift arc what I was welding also with the bad IGBT the current was real hard to...

[jake]

Well it went to the service center yesterday hopefully its not the

[jake]

.....anybody up yet??

[jake]

I still do because for what i do they work just fine.

[jake]

well I found my finger control. Tried it still no HF, tried AC and DC. No HF and NO HF sounds at all. Where do you check to see if your getting power to the HF board?

Thanks!!

[jake]

do yall have a wiring diagram for the pedal?

I'm going to go grab my neighbor's pedal and try it. Hopefully that is it. Should be an easy fix there

[jake]

I have searched and searched.

I did check the contacts cleaned and set at .010

I did blow the machine back out and clean out the dirt dauber nest in the bottom. It will weld on lift and stick.

Where do I check the input voltage to the HF transformer?...

[jake]

Rotatory phase converters have a hard time keeping the frequency where it is supposed to be and with the frequency variations the total harmonic distortion becomes a problem. Solid state phase converters I do not think would be a solution either, with the solid state converters they do not have a smooth...

[jake]

the stuff is clean it would not be released if it was not. anything that goes in the reactor building is assumed contaminated until proven not just like this stuff. These may have been used in the outside staging area on clean equipment which was also considered an radiological controlled zone which...

[jake]

The bidding may go up to high on them and push them out of what I will pay, but it was some tools at work a contractor left behind that had to be de contaminated so they just left them. (real common in nuke industry) it is a 304 cc/cv, non of the lincoln welders had the pulser these machines were...