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My TCL S45H, connected to a set-top box via optical cable, keeps entering standby mode by itself after 15–20 minutes. The manual's method (holding Voice Enhance for 5 s in standby) does not disable Auto Standby on my unit. How can I permanently disable Auto Standby over the optical input, or which firmware update fixes this?

2026-10-22 1 answer

Based on the TCL S45H Quick Start Guide, the documented method to toggle the Auto Standby feature is to long-press the Voice Enhance button…