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Thread: Lincoln ranger 9. No weld or power output. Where to start?

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    Lincoln ranger 9. No weld or power output. Where to start?

    Hey yall! Like the title says.....I just picked up a new to me mid 90's ranger 9 that starts and runs great but produces no weld or receptacle power. It also has a high idle that can only be cured by manually pushing on the throttle lever. I bought the machine from the original owner in its current condition. He said a couple years ago he was welding with it and at one point he finished a weld and when he tried to start another weld it wouldnt do anything. The machine has 2,500 hours on it and the serial# 9975-U1950217611. So my question is instead of just throwing parts at this thing where do i start with troubleshooting? Thanks for any help in advance!!

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Post a code number from the front of the machine? Helps to find manuals and wiring diagrams
    "Si Vis Pacem Para Bellum"

    Lincoln Idealarc 250 AC/DC
    Millermatic 251 Syncrowave 300 30A spoolgun
    Lincoln MP210
    Hypertherm 45
    (2) LN 25
    (2) Lincoln Weldanpower 225 CV
    (4) SA200 1 short hood SA250 SAM 400

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    The 9975-U1950217611 i posted is the only numbers on the front of the machine.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    First things that come to mind are dirty armature and or stuck brushes, worn brushes. Cracked slip rings that brushes ride on. Bridge Rectifier but don't think that would effect your AC aux. power. not sure.
    many more qualified than I will chime in.
    here is the owners manual for your unit Code 9975
    https://www.lincolnelectric.com/asse...oln3/im511.pdf
    "Si Vis Pacem Para Bellum"

    Lincoln Idealarc 250 AC/DC
    Millermatic 251 Syncrowave 300 30A spoolgun
    Lincoln MP210
    Hypertherm 45
    (2) LN 25
    (2) Lincoln Weldanpower 225 CV
    (4) SA200 1 short hood SA250 SAM 400

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    A miller bobcat has a fuse inside the unit that will cause that issue - don't know about a lincoln though.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Quote Originally Posted by kolot View Post
    First things that come to mind are dirty armature and or stuck brushes, worn brushes. Cracked slip rings that brushes ride on. Bridge Rectifier but don't think that would effect your AC aux. power. not sure.
    many more qualified than I will chime in.
    here is the owners manual for your unit Code 9975
    https://www.lincolnelectric.com/asse...oln3/im511.pdf
    When you say "armature" do you mean slip rings? The slip rings where a bit dirty and i cleaned them....it made no difference. I also checked the brushes at the slip ring, the moved freely and looked in overall good condition.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Quote Originally Posted by cwby View Post
    A miller bobcat has a fuse inside the unit that will cause that issue - don't know about a lincoln though.
    I looked all over this machine and didnt see a single fuse. I wish it could be that simple.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Check the D2 diode and C1. When welders will not make output. Start will the excitation circuit. For that we need AC voltage on wires 7 and 9.
    If no voltage on 7 and 9 you may need to flash the welder. Also there may be a short in the excitation circuit. Slip ring to ground, D2 diode.
    wires 200 and 201 to ground . or the C1 capacitor is bad.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Quote Originally Posted by ccawgc View Post
    Check the D2 diode and C1. When welders will not make output. Start will the excitation circuit. For that we need AC voltage on wires 7 and 9.
    If no voltage on 7 and 9 you may need to flash the welder. Also there may be a short in the excitation circuit. Slip ring to ground, D2 diode.
    wires 200 and 201 to ground . or the C1 capacitor is bad.
    Thanks for the input. Ill check AC voltage on 7 and 9 today. What is the proper way to check D2 and C1?

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Ok so I have 0v AC on wires 7 and 9 but if I switch the multimeter to DC I get 1V on wires 7 and 9.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Wires 7 & 9 will be the AC that feeds the rectifier bridge (diode block), which rectifies it to DC and feeds the slip rings excitation voltage via wires 200A (+) and 219 (-).

    Yours has no output, so if you can find wires 200A and 219 and momentarily jump 12v from the battery to them, you should see voltage at the outlets with your meter if there isn't something wrong in the windings.

    I'd also recommend testing your field diodes with your meter. If it doesn't have a diode test function, just set it to ohms, pull the wires and check the spades each way. Across the diodes your meter should show low resistance one way, and OL the other way. Don't get the leads mixed up when you reconnect them.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Just curious I have the same problem same type of machine 0 voltage on wire 7 and 9 windings do check out good did apply 12 V to the slippers did build voltage kind of confused as to where to go next I'm assuming PC board but the sevice manual doesn't give inputs and output trouble shooting for the PC or a flashing procedure
    Last edited by Andy D; 08-07-2022 at 03:55 PM.

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Flashing is what you did when you applied 12VDC to the rotor slip rings.

    I presume the service manual you refer to is manual SVM110A?
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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Quote Originally Posted by duaneb55 View Post
    Flashing is what you did when you applied 12VDC to the rotor slip rings.

    I presume the service manual you refer to is manual SVM110A?
    Yes that is correct It's a photocopied version I bought off a eBay so the schematic is sketchy to read and the schematic on the inside of the machine is completely gone wiped off I'm assuming wires 224E and 224C Is what Feeds the exciter circuit I've 12vdc at the pc1 on both

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    PM me an email address and I'll send you a .pdf version of the manual that you can read.
    MM200 w/Spoolmatic 1
    Syncrowave 180SD
    Bobcat 225G Plus - LP/NG
    MUTT Suitcase Wirefeeder
    WC-1S/Spoolmatic 1
    HF-251D-1
    PakMaster 100XL
    '68 Red Face Code #6633 project
    Star Jet 21-110

    Save Second Base!

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Quote Originally Posted by Andy D View Post
    I'm assuming wires 224E and 224C Is what Feeds the exciter circuit I've 12vdc at the pc1 on both
    224C is where the PC gets 12VDC+ supply. 224E along with 232 goes to the flyback diode on the board for the main contactor CR1.

    200B provides 12VDC+ to the positive brush for initial excitation and field voltage monitoring when running. A failed open flashing diode D30 on the board would prevent initial rotor excitation.

    201A provides/monitors DC- excitation voltage.

    219 from the board controls DC- to the negative brush to regulate auxiliary and weld output voltage.
    MM200 w/Spoolmatic 1
    Syncrowave 180SD
    Bobcat 225G Plus - LP/NG
    MUTT Suitcase Wirefeeder
    WC-1S/Spoolmatic 1
    HF-251D-1
    PakMaster 100XL
    '68 Red Face Code #6633 project
    Star Jet 21-110

    Save Second Base!

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  20. #18
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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Thank you that's exactly what I needed to know short story I'm an X Miller electric certified Tech worked a lot in the statics but not too much in engine drives and not a whole lot of Lincoln's but been in the automotive industry for the past 12 years and trying to get some decent troubleshooting information has been tough If I can make any contributions to this group at all in the future I absolutely will .. And I'm just trying to fix this machine for a friend as a favor no financial gain of this at all

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    Re: Lincoln ranger 9. No weld or power output. Where to start?

    Usually it's the board in my experience, but one would arrive at that conclusion after checking for excitation.

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