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]