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Re: Vintage Pilot260

No, not with a basic multi-meter (read the meter instructions or it's dial for capabilities). By measuring at least some DC resistance, you have shown there is not an open winding & no direct short (even if some of the winding is shorted, which seems to be your concern). If there is a pilot lamp in parallel with the primary winding, it will lower the *expected* resistance measurement. If you are loath to power up via the light bulb method, then disconnect the power transformer secondary windings from the circut & measure AC voltage on those windings when plugged in. In this way you can evaluate the transformer without endangering the circut. As Aretha Franklin sang, THINK! (because you are working with lethal voltages & currents).

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