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Still having problems with 330A/BP

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  • Still having problems with 330A/BP

    I'm still having problems with my 330A/BP. I went thru the troubleshooting guide. I have questions on the resistance on the coils for the Magnetic Amplifier and R7. I tested all of the resistors and rectifiers. They all checked out good. I still don't have any power in the Low and Medium Amp settings. Having this problem with stick and tig. Both AC and DC.

  • #2
    Please post your serial number

    Have you checked the contacts on the range selector switch? Far more likely to be the problem than the mag amp. Mag amps can fail but switches fail way more often.
    Last edited by Aeronca41; 03-05-2017, 08:35 PM. Reason: Added info

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