When troubleshooting a TV or monitor, the behavior of the standby light can provide clues. Here’s what each condition usually signifies: * Standby Light On: The TV or monitor is receiving power but might be off or in standby mode. Check input sources and settings. * Standby Light Off: Indicates no power. Verify that the power cable is connected and the outlet works. * Standby Light Blinking: Suggests an error code. The blinking pattern can help diagnose issues like internal failures or overheating.