LED Light repair,

[gordy2988]

so I just picked up a used tank and it came with one of they over sea's black box led lights.
guy said it just stopped working. can anyone please help me on where to start?
two channel, two switch's, two dimmers, but nothing coming on.

 

[oreo54]

Nothing coming on points to multiple problems..
Usually uses 2 AC/DC drivers..

Just stopped working when it to a tank dive.........

Normally one channel may stop working if a diode fails "open" or one of the 2
drivers die..
Both failing at the same time would not be a good thing nor likely.

Finding replacement drivers is also problematic..

Look up how to test LED's ..
You will more than likely have to remove the board and all the lenses and test each of the 55 individually..

You can test the driver for voltage BUT since these usually can output serious DC voltages i.e 90-100v I'm not going
to encourage you to test them which would have to be done live...

Only if replacing a few open diodes is what is needed would it be worthwhile to repair not replace..
So start there. With a disconnected LED board..



https://www.brighthubengineering.com/robotics/60933-how-to-test-led-lamps/
Ignore the voltage part and one can also use the low Ohms setting..

 

[gordy2988]

thank you,,, that was very helpful.
i took it apart last night and did some cleaning,,, plugged in it and gave it a try. this thing is dead.
did get to check it out with my meter,, but that's next. I was wondering if the power cords could be bad?
but i will be able to tell, once i get my meter on it.
thanks again,,

 

[dantimdad]

I would say it went for a swim.

I have never seen on that both channels went out together.

It's possible there is something else going on that's fixable but, honestly, I would toss it and get another light. They are so inexpensive that it's not worth your time to debug and I DIY or fix everything usually.



Welcome aboard!