Smart TVs enter standby mode to enable faster start-up times
Modern smart televisions use a deep sleep state instead of a full shutdown to allow quicker booting when users press the power button.

Power consumption in standby
These devices sip a small amount of electricity while remaining in this low-power state. Smart TVs barely consume any power during this period compared to other household appliances.
Boot time advantages
Shutting down the unit completely requires waiting several minutes before the screen returns to normal operation. Newer models with operating systems like WebOS or Google TV take longer to boot than smartphones due to lower-end processors.
Maintenance and reliability
Standby mode serves as a necessary part of display maintenance for long-term device reliability. Keeping the television in this state avoids the delays associated with a full system restart.
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