In the usual Kuzyatech fashion, when something breaks, we must take it apart. Today, one of the ”early adopter” GU10 style LED lamps decided to fail mechanically:
The power supply is wrapped in some tape. But that does not preclude a bunch of exposed mains line points from being visible
All part numbers sanded off. Diode bridge on the left, controller IC in the middle, opt coupler on the right. Clearance distances- nowhere to be found
Of course you can solder thru hole Aluminum cap across a ceramic. What’s wrong with that?
The lamp uses SHP brand Heat sink/lens combination. LEDs appear to be hand soldered to the metal clad board, with very questionable solder joints
And now to the everyone’s favorite part- reversed engineered schematic diagram. What we have here is basically an isolated (if we ignore for a moment the total lack of clearances between various nodes) power supply with voltage and current feedback.
Read More: No-name GU10 LED lamp teardown