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LED Spotlight power supply

Goldtooth

Jan 3, 2017
5
Joined
Jan 3, 2017
Messages
5
Hi

I have a Eurolux 20W LED Floodlight that just stopped working. I opened up the power supply.
Firstly I noticed something might have happened to the small transformer and in fact the core was broken. I'm not sure if this is the problem since they only carry magnetic flux?

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I unscrewed the board and on the flip side found a pair of burnt out SM resistors (R25 & R26 at the bottom left). There was also a burn mark on the paper underneath the spot.
Bottom.JPG
Here's a close-up of the problem area.
Problem.JPG

It's impossible for me to make out the codes on the fried resistors. The input to the power supply is ~240 V AC and it feeds the 20W LED lamp with 29~36 V DC.
Is it possible/worth trying to fix this? Might there be schematics floating around where i can get the resistor codes? Any advice would be greatly appreciated.
 

oz93666

Dec 7, 2014
38
Joined
Dec 7, 2014
Messages
38
An led can operate on the simplest of power supplies... I would take out or isolate the mains transformer ... measure the voltage coming out , then decide what to do
 
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