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  1. #1
    Join Date
    Jun 2009
    Posts
    9

    Default Syncwave 250 HF help

    Guys,

    I need some help with my Syncrowave 250. Its a 2000 model with low hours on it.

    Earlier this week it was working fine. Tonight I went out to weld some aluminum, set the output to AC and the HF to continuous, stepped on the pedal and got nothing.

    Switched over to DC and HF start, but HF start didn't work. It will hold an arc when scratch started.

    Dressed the tungsten HF electrodes and reset the gap at 0.008in. Now I can get momentary HF but it won't stay on.

    Exercised the HF strength knob a few times but didn't help so I pulled the covers and blew the machine out with compressed air.

    If I wait 30 seconds the HF circuit will run for about 5 seconds and then dwindle out. Let the pedal up and wait 30 seconds and get 5 more seconds of HF.

    Nothing inside the machine "looks" wrong, there was only minor dust build up in the machine, hardly enough to blow out.

    Thoughts or suggestions on how to get the HF working again?

    Thanks,
    -Rob

  2. #2
    Join Date
    Jun 2009
    Posts
    9

    Default

    Nobody has any suggestions?

    I am questioning the HF capacitor. Anybody know how to test its function?

  3. #3
    Join Date
    Sep 2005
    Location
    northern NJ
    Posts
    1,821

    Default

    Have you checked the preflow setting? One time it got moved on mine & wouldn't start an arc until after the set time. Took awhile to realize it.
    MM250
    Trailblazer 250g
    22a feeder
    Lincoln ac/dc 225
    Victor O/A
    MM200 black face
    Whitney 30 ton hydraulic punch
    Lown 1/8x 36" power roller
    Arco roto-phase model M
    Vectrax 7x12 band saw
    Miller spectrum 875
    30a spoolgun w/wc-24
    Syncrowave 250
    RCCS-14

  4. #4
    Join Date
    Sep 2005
    Location
    northern NJ
    Posts
    1,821

    Default

    I assume you checked all the connections, especially the ground/work clamp?
    MM250
    Trailblazer 250g
    22a feeder
    Lincoln ac/dc 225
    Victor O/A
    MM200 black face
    Whitney 30 ton hydraulic punch
    Lown 1/8x 36" power roller
    Arco roto-phase model M
    Vectrax 7x12 band saw
    Miller spectrum 875
    30a spoolgun w/wc-24
    Syncrowave 250
    RCCS-14

  5. #5
    Join Date
    Jun 2009
    Posts
    9

    Default

    Thank you for taking the time to reply. Unfortunately I don't even get HF at the HF points.

    I have also checked that the breaker isn't tripped for the 110V circuit.

  6. #6
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,470

    Default

    And what would that serial # be.....

    Jusr cause you say its a 2000 there is a problem with the 2001 units...

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