I had to repair my outdoor light by reverse engineering the circuit board.
It failed because water/moisture got onto the top of the PCB and rusted component leads, the bottom was just fine. I had to clean it in alcohol and then replace a couple badly rusted components. I then used a parylene conformal coating on the board to help prevent further issues. I silicone sealed around the solar panel and detector to help keep out the water.
It uses a couple AA rechargeable batteries, a solar panel for charging during daylight, and a light detector to detemine if the LED should be on (night) or if it should be charging batteries (day).
I find it's kind of an interesting circuit, so I'm posting it here.
It failed because water/moisture got onto the top of the PCB and rusted component leads, the bottom was just fine. I had to clean it in alcohol and then replace a couple badly rusted components. I then used a parylene conformal coating on the board to help prevent further issues. I silicone sealed around the solar panel and detector to help keep out the water.
It uses a couple AA rechargeable batteries, a solar panel for charging during daylight, and a light detector to detemine if the LED should be on (night) or if it should be charging batteries (day).
I find it's kind of an interesting circuit, so I'm posting it here.
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