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Old 4 weeks ago
Lives for gear

Do you have a multimeter? If you do, the first thing I would check is the grounds. Resistance should be 0 ohms between pin 1 and the XLR shell. Also both of those points should also measure zero to the outside metal casing of the microphone. Many of those old Turner mics are high impedance. Open the XLR and see how it is wired.