LED Batten Repaired For No Light
One evening my neighbor phoned me that he is having light problem in house after he switched ON the Light there is a bang noise & light of home Tripped.
After going to his home I just asked him from which side he heard the bang noise, he told me the noise is from the LED Batten. So I disconnected that Light & reset the Tripper & light in other area of house is working fine. So the culprit is the Batten itself. I removed batten from the wall & took that on my workbench for fulfill my curiosity.
Opened Side clips from the casing locking & removed LED Driver circuit.
Seems something blown on the circuit.
Removed damaged part from the circuit and by seeing marking on the PCB you can make out this is Capacitor.
From Aluminum strip you can make out this is Blown Electrolytic Capacitor.
I checked other parts by cold testing on the Circuit there is no shorting of any components on the circuit.
Now question is, what about Value of blown capacitor? normal T5 LED 20w Batten having out put some where about 180v. so the replacement capacitor should be somewhere around 250V.
For confirmation took out some circuits from my junk board. But not found any nearby value Capacitor.
Arranged one 250v capacitor from my capacitor salvage box.
Replaced the Capacitor on circuit.
Connected the circuit to LED Strip after confirming O/p. Voltage it showed 160v.
& Batten Light up.
Installed back the batten on wall & you can imagine light on my neighbor’s face….
This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.
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Note: You can check his previous repair articles on Laptop Distorted Sound Repaired