I recently bought 1 meter of WS2818b 60 LED strip to be controlled by an Arduino UNO.
I tried to test if all the LEDs were working or not by connecting Samsung power adapter (5V, 2A) to the LED strip's VCC and ground. Only 3 LEDs lit up with green light. The rest of the LEDs did not light up.
Did I burn the LEDs? Or do the LEDs only work if I load the code?