230V LED Nous smart WiFi Bulb P3 repair help needed.
Bulb doesn't work. Multimeter shows:
GND - W-: 0.15V
GND - HW+: 0.12V
HW+ - HW-: 0.14V
I tried shortening all LEDs one by one - didn't help. The LEDs also doesn't light when I test each with continuity/diode tester (with mains power removed). How to proceed?
AI: Does the bulb show any signs of life at all (WiFi pairing/AP visible, brief flash, any LEDs glowing), and is there any visible damage on the PCB/components such as burnt parts, cracked capacitor, or blown fuse resistor?
No signs of life. No visible damage.
AI: Can you share where exactly those voltages were measured, and what voltage you have at the mains input and on the main DC bus after the bridge rectifier/filter capacitor when powered from 230V?
The labels are on the attached picture.
Ok, I see CEM1-1 has burned.
Bulb doesn't work. Multimeter shows:
GND - W-: 0.15V
GND - HW+: 0.12V
HW+ - HW-: 0.14V
I tried shortening all LEDs one by one - didn't help. The LEDs also doesn't light when I test each with continuity/diode tester (with mains power removed). How to proceed?
AI: Does the bulb show any signs of life at all (WiFi pairing/AP visible, brief flash, any LEDs glowing), and is there any visible damage on the PCB/components such as burnt parts, cracked capacitor, or blown fuse resistor?
No signs of life. No visible damage.
AI: Can you share where exactly those voltages were measured, and what voltage you have at the mains input and on the main DC bus after the bridge rectifier/filter capacitor when powered from 230V?
The labels are on the attached picture.
Ok, I see CEM1-1 has burned.
