in each of smd module 3 led and resistor are series. after 2 or 3 days one of leds turn off but tow other leds remains bright. can any one explain this video's and picture.
Maybe you've destroyed some of the LEDs. These don't already to be addressable LEDs, so I'll ignore that as a possibility. When you have killed, or nearly killed, a LED then you often find they either don't come on immediately, it require a higher current to turn on, or are unusually dim. Since semiconductors tends to fail short circuit, failures tend to cascade.
