led light bar repair

offroadin 88xj

Well-Known Member
Joined
Mar 6, 2010
Location
winston-salem
I have a led light bar and the leds are going out in it is there any way to fix them like putting new leds in the ones burnt out or is there something else causing it
 
Probably just cheap LEDs or cheap LED drivers unless you have some moisture intrusion problems. Good quality high intensity LEDs will last tens of thousands of hours, but they're considerably more expensive than most of what comes in an average light bar.

You might be able to put new LEDs in it but you'd have to know the LED specs for forward voltage, current, brightness (Lumens), beam angle, etc. if you wanted to match the existing ones, and you'd need the correct physical package. If you can find a brand logo on the LED then you're much, much closer. If they're a modular design you might be able to get new LEDs from the company, or have them repair it. It's almost as likely that a component in the LED driver circuit is bad though.

Usually white LEDs in a design for 12V systems will be groups of 3 LEDs in series, with all the groups of 3 then wired in parallel. If you have 3 LEDs that are all out right next to each other, either one (or more) of the 3 LEDs is bad, or the LED driver for that string of 3 is bad.

You can find out what's wrong with some basic multimeter testing, but that doesn't mean it's necessarily a simple repair.
 
Fabrik8 said:
Probably just cheap LEDs or cheap LED drivers unless you have some moisture intrusion problems. Good quality high intensity LEDs will last tens of thousands of hours, but they're considerably more expensive than most of what comes in an average light bar.

You might be able to put new LEDs in it but you'd have to know the LED specs for forward voltage, current, brightness (Lumens), beam angle, etc. if you wanted to match the existing ones, and you'd need the correct physical package. If you can find a brand logo on the LED then you're much, much closer. If they're a modular design you might be able to get new LEDs from the company, or have them repair it. It's almost as likely that a component in the LED driver circuit is bad though.

Usually white LEDs in a design for 12V systems will be groups of 3 LEDs in series, with all the groups of 3 then wired in parallel. If you have 3 LEDs that are all out right next to each other, either one (or more) of the 3 LEDs is bad, or the LED driver for that string of 3 is bad.

You can find out what's wrong with some basic multimeter testing, but that doesn't mean it's necessarily a simple repair.
Click to expand...

Its only got 2 out side by side
 
That might only be a string of 2 then, instead of a string of 3. Might be a little more crude than the type I'm talking about. My previous info still holds true though.

Have you taken it apart yet?
 
Fabrik8 said:
That might only be a string of 2 then, instead of a string of 3. Might be a little more crude than the type I'm talking about. My previous info still holds true though.

Have you taken it apart yet?
Click to expand...

Nah was gonna wait and see what people said first I didn't know if I could just change the led bulbs out for new one or what
 
They're probably soldered to a circuit board along with all of the LED driver components, etc., so it will likely be a fairly involved repair even if you did have replacement LEDs.
 
Could be cold solder. I have had some where I just re-solder them and all good..
 
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