millermatic 35s and i need help

[jw150]

good evening all, i recently picked up a 35s(ser.72-652745) from a garage sale . the gentleman said it run great until he tried to clean it up. got it home opened it up and noticed wire markers on some of the wiring. i think i should start with the wiring. hers where i need the help. i need a wiring diagram if anyone could steer me in the right direction it would be most helpful. thanks for reading this.

 

[scooby074]

Try posting over on the official Miller forums. There are several repair guys who post regularly there.

 

[vpd66]

Did you try to power it up? Want doesn't it do? I believe a quick internet search should bring up a wiring diagram. I've put a ton of hours on 35s and they are great welders.

 

[bdbecker]

Miller has all their manuals available online:

Manuals & Parts | MillerWelds

Find replacement parts and receive detailed answers to your questions by downloading owner's manuals for your Miller products.

www.millerwelds.com

There are three versions available for the 35S, but the only one that I see having any electrical diagrams is the 01301B revision. I'm not sure if that'll be correct for your machine depending on when it was made, so just be aware of that.

https://www.millerwelds.com/files/owners-manuals/O1301B_MIL.pdf

Hopefully this gets you the info you need.

 

[jw150]

thanks

Did you try to power it up? Want doesn't it do? I believe a quick internet search should bring up a wiring diagram. I've put a ton of hours on 35s and they are great welders.

when i poweron the fan turns about 1/4turn then stops. power on pull trigger the gas flows but no feed and a very loud hum sound . tested feed motor and it runs . thats as far as i got last night.

 

[jw150]

Miller has all their manuals available online:

Manuals & Parts | MillerWelds

Find replacement parts and receive detailed answers to your questions by downloading owner's manuals for your Miller products.

www.millerwelds.com

There are three versions available for the 35S, but the only one that I see having any electrical diagrams is the 01301B revision. I'm not sure if that'll be correct for your machine depending on when it was made, so just be aware of that.

https://www.millerwelds.com/files/owners-manuals/O1301B_MIL.pdf

Hopefully this gets you the info you need.

thank you ill check it out

 

[jw150]

Did you try to power it up? Want doesn't it do? I believe a quick internet search should bring up a wiring diagram. I've put a ton of hours on 35s and they are great welders.

this morning i fiddled with the fan motor it now comes on when the power is turned on

 

[mogandave]

Not familiar with this particular model, but start checking voltages. The trigger must be working as it turns on the gas.

Is the drive motor getting power when you pull the trigger?

The relays/contactors do go bad. Sometimes pulling them and reseating works.

 

[jw150]

no the motor is not getting power

 

[MBfreak]

Troubleshooting is about accepting the function of the unit you work on. It knows how to function.
You have to acceot and understand that.
A good start is a manual but most important is
that you do understand it. Matthew Crawfords " Shop Class as Soulcraft" is a good starter.
Ola

 

[seber]

First thing to check on any wire feed welder is the relay contacts. They are constantly arcing and burning. Run a points file through them and see if it helps.

 

[jw150]

Troubleshooting is about accepting the function of the unit you work on. It knows how to function.
You have to acceot and understand that.
A good start is a manual but most important is
that you do understand it. Matthew Crawfords " Shop Class as Soulcraft" is a good starter.
Ola

thank you for the advice. i have 32years in the operating enginers local 12 . the last 8 years i was lead repairman on the graveyard shift .i am sure i understand the function of the unit i am requesting help with. again thank you for the advice.

 

[jw150]

First thing to check on any wire feed welder is the relay contacts. They are constantly arcing and burning. Run a points file through them and see if it helps.

i have done that and still no power to feed motor. the motor works if you apply power directly to it.

 

[mogandave]

i have done that and still no power to feed motor. the motor works if you apply power directly to it.

Have you checked the relay/contactor as advised above?

 

[papa Smurf]

good evening all, i recently picked up a 35s(ser.72-652745) from a garage sale . the gentleman said it run great until he tried to clean it up. got it home opened it up and noticed wire markers on some of the wiring. i think i should start with the wiring. hers where i need the help. i need a wiring diagram if anyone could steer me in the right direction it would be most helpful. thanks for reading this.

I have one. Right now I'm having problems with the wire feed not working but I've used it quite often and it's a great machine. What can I do to help you

 

[papa Smurf]

It looks like we are both having the same problem. I have recently texted a welding repair shop that's in the next town over to see if they can help. And taking a meter to it everything I found was going to AC when there should be a bridge rectifier that turns it to DC. The wire feed was getting weaker and weaker on me so apparently it must be a diode or a rectifier that is finally gone. I'll keep you informed and what I find with mine so that you may get yours back and running. Papa Smurf

 

[NUTTSGT]

OP hasn't been back in about 5 years.