Emerson C8538-1 135-7351-02 Door Chime Unit

Emerson C8538‑1 135‑7351‑02 is a vintage Rittenhouse door‑chime unit that uses a series of brass tone tubes and a small transformer to drive the chimes when a doorbell button is pressed. Common failure modes include blown or degraded transformer windings, broken or corroded wiring connections between the button contacts and the chime board, and cracked or damaged tone tubes that no longer resonate. First‑check steps: verify 12 V AC/DC supply to the transformer; inspect all wiring for continuity and secure terminal connections; visually examine the tone tubes for cracks or soot buildup before testing with a multimeter across the button contacts.[oss-gpt-20b]

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