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1986 blue charger generator welder, no weld, just sparks on…

Customer Question
1986 Miller blue charger...

1986 Miller blue charger generator welder, no weld, just sparks on electrode, low ac. I have seen the blogs and I have several schematics. D4 and scr2 are ok. How can the exciter voltage to scr2 be approx 167v with an ac output of approx 12v dc

Mechanic's Assistant: What's the make and model of the generator? And can you guesstimate how old it is?

No smoke noted all dcr's seem ok. What is your charge for assistance? Chuck

Mechanic's Assistant: You just pay a $5 deposit now and the rest only when you get a reply from the Small Engine Technician. All of this is 100% satisfaction guaranteed, so you can get a refund if you're not happy for any reason. Do you plan on doing the work yourself?

Yes, but how much is the final bill and I am not satisfied until the machine is working or I a definite definable problem is found. chuck

Mechanic's Assistant: Anything else we should know to help you best?

I applied shop 120 v to ac side of scr2 and noted 16 V doc at the positive terminal to ground. The 120 v, 100 hz recptical produced power, but no weld.

Submitted: 9 months ago.Category: Industrial Equipment
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Customer reply replied 9 months ago
Miller 200le blue charger. 1986 year model. Onan engine, welder, generator and battery charger.
Answered in 5 days by:
9/19/2017
Mechanic: Jeremy, Technician replied 9 months ago
Jeremy
Jeremy, Technician
Category: Industrial Equipment
Satisfied Customers: 3,776
Experience: ASE Medium/Heavy Duty Technician, Hydraulics, Brakes, Electrical Certified
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My name is ***** ***** I will assist you with your question today.

I'm an independent contractor and I don't get paid until a rating has been made.

We can go back and forth as needed to help resolve the issue you are having. Follow ups are free after ratings, so rate in confidence!

I don’t normally work on these, but I can try to assist you where I can. Did you still need assistance with this? Or do you prefer to work with a tech that knows the equipment better?

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Customer reply replied 9 months ago
Turned out to be the scr2. Replaced it and everything works.
Mechanic: Jeremy, Technician replied 9 months ago

Glad it is fixed!

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