A friend of mine has a 100W rechargeable floodlight.
It doesn’t work anymore.
A couple of weeks ago his charge port broke, and I replaced it with a new one. Insulated and sealed everything with hot glue. After this it worked for 2 days and now it stopped working completely.
Charger says battery is full and from what I measure this is correct.
When he turned it one it only flashed for a second. It has done this a couple of times but now it won’t even do that.
He got it to work 2 times by keeping the charger connected and the light stayed on. But this also doesn’t work anymore.
Because of this I figured the batteries are dead but they don’t appear to be so.
I measured voltage on the leads going to the LED to see if there was something wrong in the connection or switch. With the switch off I measure nothing, with the switch on I measured 12.1V. This leads me to believe the batteries are holding the charge and the circuit is working.
I also created a breakout cable and used the charger directly on the led. Led did not turn on.
There are no markings on the LED so I’m not sure what I’m dealing with. But searching for a bit it could be that this LED might need 30-36V, so that would mean something in the circuitry is defective and not stepping up the voltage? Either that or the LED is defective would be my guess.
I’m not that into electronic repair, I know how to solder a wire and measure simple things so not sure if everything I tested is the correct way of testing and that my findings are what they should be.
Here are some pictures of the lamp, click on them for larger pictures. Maybe someone can tell me what would be the issue, and if it’s fixable for me.
He bought the lamp for I believe around 250€ so being able to repair it instead of tossing it would be nice.