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Linde HDA 200 - DCSP doesn't work.

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  • Linde HDA 200 - DCSP doesn't work.

    I helped a friend of mine pick up this huge old welder. The AC works fine. The DC reverse polarity will ball a tungten, and I inserted a 3/32 7018 rod and it welded fine. But the DC straight polarity does nothing. I suggested he look at the selector switch. Any ideas?
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