Question: how to repair garage door chain?
Answer: Before you begin. [00:24] Disconnect power. [00:28] Take the garage door opener down. [00:34] Remove the chain and cable assembly. [01:44] Install the new chain and cable assembly. [02:33] Tighten the chain. [03:50] Reinstall the garage door opener. [04:01] Reconnect electrical power. [04:41]