49 inch LG led television model (49UJ634V) with backlight problem now repaired.

 I received a whatsups message from a neighbor with the following image taken from his television screen and wanted me to advice him about the issue.

As you can see from the image the top part is dark, from the screen shot I suspected backlight failure but was to confirm since from experience if one backlight fails for branded television like LG I expect the protection circuit to kick in and shut down the television.

49 inch KONKA Led television came in with power related problem now repaired.

I received a phone call from a client who wanted his television checked by a technician.

The symptoms were, Television is powering on then shutting down after 20 to 30 minutes.

When the television shut down, the audio remains but no picture.

Since I could not figure out the real cause of this symptom from the description given on phone, I requested him to bring the television to the shop for further testing.

Within one hour he was at my shop credits to Google map which does great job in directing customers to my shop.

Once on my work bench I decided not to test what the customer said since I figured out taking a whole 20 minutes waiting for the symptoms to present is waste of time.

I opened the television and after removing the cover my eyes caught the attention of one capacitor which had its top silver part slightly swollen as you can see below.

 

 

32 inch SONY LED television model 32R420B dead, red lights blinks 6 times now repaired

 I received a phone call from a friend who wanted his television checked by a technician; I scheduled him the appointment and he logged in our office the following day.

First I wanted to confirm the symptoms he has given me before opening the television in his presence.

I noted the screen was trying to display but shutdown immediately.

After 30 seconds I noted the red light will start blinking, I decided to count the number of blinks and noted they were 6 blinks, 3 second break, and then start again.

LED television backlight replacement

LED backlights have a lifespan, for branded tvs like Sony, LG, Samsung etc they go up to 5 years without issues.

But other brands most start developing backlight issues after 2 years is common.

Kindly note that LED backlight are connected in “series”, this means if only one piece is open, the whole set will stop working.

If one led get shorted the tv will continue working but there will be overload to the remaining LEDs and therefore it will be a matter of time before the remaining leds fail and if any of them open, again the television will loss picture.

From experience, I have seen the best cure for backlights is changing all backlights at the same time to avoid customer coming back with the same problem after a few days or weeks. This is particularly notorious with Sony televisions.