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
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Parasuraman S
August 26, 2023 at 8:36 am
A good professional fix! Thanks for sharing!
Yogesh Panchal
August 28, 2023 at 12:59 am
Thank you! Sir
Kelvin
August 26, 2023 at 11:37 am
Good job
Yogesh Panchal
August 28, 2023 at 1:00 am
Thank You! Kelvin
Albert van Bemmelen
August 26, 2023 at 4:04 pm
Excellent thinking! Thanks for sharing.
The 7 pin smd pwm ic probably was an S9263 or 59263 ic? And likely no Viper type ic? Tried to search for a matching datasheet but sadly nothing was found.
Yogesh Panchal
August 28, 2023 at 1:12 am
You are right Albert,
I was also not found any reference for S9263 Led driver IC.but traced it was used in circuit same way as per IC SIC9763.
https://datasheetspdf.com/pdf-file/1331091/SISemiconductors/SIC9763D/1
Imoudu.O
August 28, 2023 at 6:11 am
Experience has played its role to make this repair possible I guess!!
Yogesh Panchal
August 28, 2023 at 3:50 pm
Thank you! Imoudu