Replacing the LED chip

Electromechanical Optoelectronics
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Hi, I am new at forum and I have a question regarding LED chip.

I am trying to change the LED chip on lamp, which consist of four LED lights (chips) in series. Driver was damaged, so I already change it. But the lamps where blinking with new driver also. So I exclude the damaged LED chip and now 3 LEDs are working, but I want to change the defective one to have complete lamp.

Specifications of lamp and driver: 4x LED 5W; constant current 500mA, DC 25-50V; Max 25W

I attached first power supply (defective → changed), second power supply and the LED chip (it has number on it 50B24, 19mm wide). Can you suggest replacement for this chip that can be ordered? I couldn’t find it…

Thank you very much in advance.

IMG_4819
IMG_48191686×2253 579 KB
old power supply (defective)

IMG_502D253D-29BB-4D94-A1E9-41EB2F985C47
IMG_502D253D-29BB-4D94-A1E9-41EB2F985C471920×2560 908 KB
new power supply

IMG_5241
IMG_5241712×562 159 KB
led chip

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Hello @marko.prnaver,

Welcome to the TechForum.

DigiKey offers thousands of LED modules in the LED COBs, Engines, Modules, Strips sections.

The challenge is to find a module that can be thermally bonded to your heatsink.

Would it be possible to use those mounting holes? If yes, it may be possible to use something like this.

IMO, this is a challenging as there are so many different ways to solve the problem. Please let us know if you were successful.

Sincerely,

Aaron

3

Thank you for your answer.

Specifications are ok, only the diameter is bigger than the previous one. So it will probably not fit in holes. Except to use the thermal paste to glue it on heatsink.

Will let you know. Thank you.

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