Instructables

How do you repair the light sensor on a solar light that won't turn off in the daylight?

I have one solar light that will not turn off in the daylight. There doesn't appear to be anything obstructing the sensor. The rechargeable batteries are being completely drained and will not recharge when in this particular light. I can recharge the batteries using a battery charger.

Wesley6665 years ago
Mine have a diode, a resistor, a transistor and an LED and of course a solar panel and rechargeable batteries. When the solar panel stops producing power the transistor turns on and the power goes to the resistor and LED. If yours are like this you need a new solar panel, but I don't know, I think majority of them have LDR, Phototransistors or Photo Cells which are all do the same thing.
msw1004 years ago
It maybe damp around the terminals or the lens maybe dirty
try cleaning the light sensor
lieuwe5 years ago
if it's only the sensor you just go to radio shack and buy a ldr, replace the old sensor with your ldr and it should work(they have big ones and small ones, and yes there is a difference)
Jayefuu5 years ago
Pictures inside please? If it's got wet inside there's a small chance something's shorted and is keeping it on. Or if there's some dodgy wiring inside it might have shorted.