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open pots

  1. radio429

    General HP40W, Weird combination of component failures..

    Got this one working fine this evening. Had the typical full power tx with no modulation failure. AM Amp regulator TR-51 was shorted. That immediately fixed that issue. Then noticed weird RF output power levels and lack of stability. Found both VR10 & VR11 were open. Neither of them look diddled...