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LED chips and smoking

nutsnvolts

Jul 28, 2021
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Jul 28, 2021
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Hi all, i'm new to electronics and have recently been asked to replace an LED chip in a light, i have soldered the connections and the lamp works but after about 20 seconds there is smoke and the connections break, can anyone give me ant advice?

i've tried using a higher temperature solder but that hasn't seemed to work.
 

Martaine2005

May 12, 2015
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Yes, definitely drawing a lot of current to melt the solder.
What chip and what light are you referring to?
Does it perhaps need heat sinking?

Martin
 

nutsnvolts

Jul 28, 2021
2
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Jul 28, 2021
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its strange, the LED chip is the same one that the unit uses along with the same control gear, but i still get the smoking off the connections when i put power through it.

some of the reading ive done says to use a thermal paste, would tis make a difference?
 

Martaine2005

May 12, 2015
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some of the reading ive done says to use a thermal paste, would tis make a difference?
If it says to use it, use it. It will make a big difference on heat transfer.
But that would kill the chip not melt solder.
You didn't say what chip or light .

Martin
 
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