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How to Repair a Doorbell in 11 Steps

        Home & Garden | Home Repairs

7
Check the Transformer Power

Before replacing transformer, check to make sure it's getting power from the 110-120-volt circuit. With circuit deenergized, disconnect transformer from line wires. Then turn circuit back on again and touch probes of 110-120-volt circuit tester to bare wire ends. If tester light glows or indicator reads 110-120 volts, circuit is okay.


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