My dad took down this red LED globe bulb from a shrine due to extremely low brightness, and replaced with an incandescent one. Instead of disposing the bulb, he gave me to use for parts. The outer bulb is made of plastic so I can cut it with pliers, then the six red LEDs are revealed, along with two resistors (560 ohms and 820 kohms) and a big capacitor on a simple circuit board. I suspected there was a failed LED to make the whole circuit to fail. This LED bulb was bought in 2021, but the appearance of the LEDs inside were looked very old-school, they looked like those from decades ago. I desoldered the LEDs and put onto an LED tester, they all lit and extremely bright, even 5mA would make it too glaring, proving that they were not old stocks. I also took out the resistors and both tested good, no burn marks and no abnormal resistances, so the failed part was the capacitor.
K.G.M
My dad took down this red LED globe bulb from a shrine due to extremely low brightness, and replaced with an incandescent one. Instead of disposing the bulb, he gave me to use for parts.
The outer bulb is made of plastic so I can cut it with pliers, then the six red LEDs are revealed, along with two resistors (560 ohms and 820 kohms) and a big capacitor on a simple circuit board. I suspected there was a failed LED to make the whole circuit to fail.
This LED bulb was bought in 2021, but the appearance of the LEDs inside were looked very old-school, they looked like those from decades ago. I desoldered the LEDs and put onto an LED tester, they all lit and extremely bright, even 5mA would make it too glaring, proving that they were not old stocks.
I also took out the resistors and both tested good, no burn marks and no abnormal resistances, so the failed part was the capacitor.
7 months ago | [YT] | 4