#29
"sleep-mode" just means the main appliance components aren't running and power to the LED screen is off.
The main computer is still ON, using electric, and susceptible to damages.
My much liked electronic air conditioner controller is always on even though the LED is off. Even when the screen is dark it still gives off a bit of heat and when you plug it in, it makes a beep sound.
Whenever I plug in my electronic Air Fry oven it beeps but there is no lights on the LED screen.
Some computers, when first plugging them in, the power lights will flash briefly but the computer won't come on until you push the power button.
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For whoever stated that powering up an electronic timer/controller is enough to cause it to fail- NO.
If that happened it's because the piece was already damaged, probably from being left in the ON position for too long.