LG LED TV Repaired With No Picture Symptom
This LG LED TV came in for repair with the complaint of no picture but there was power and sound. From my experiences, it could be possible the backlight problem because if one of the single LED backlight have problem the whole display would shutdown or totally no display at all.
The first thing to check the backlight is to use a LED TV backlight tester. From the test, it seems that the fault was in the LED backlight.
The next step was to remove the panel and exposed the LED backlight. From the picture below, you could clearly see that the many of the LED Lends already dropped out.
By checking all the LEDs individually, I found many of the LED backlights were either open or short circuit.
Since there were so many LED backlight have problem, the only way to repair it is by replacing all the LED strips.
After the replacement and powered On, you could clearly see all the LEDs were lighted up, there was no more shutdown and you could see the picture again in the photos below:
Conclusion- To dismantle the LED TV panel to expose the LED backlights was really time consuming and a delicate job. If you are in rush then don’t open it. You may need to take your camera to capture the photos of the panel parts so that you will know how to fix it back after installing the good LED backlights.
This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka.
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