Overview 3 Time Blink kdl-50w800C
how to fix Sony tv 3 Time Blink kdl-50w800C This fault in this Sony LED TV is due to the problem of 2.1 volts of reference of 5 volt power line. In this article, we will explain this problem in detail. We will also show you the voltage divider in the picture which gives the reference signal to the system IC. In this, we will also tell you the exact faulty component.
Fault analysis
3 times blinking usually shows the problem in the 5-volt power supply line system. The IC monitors this power supply line through a voltage divider. 5 voltage power supply line decrease or voltage loss can be the cause of this fault. If 5 volts is correct, then we will have to take the deep dive and search for this fault.
5 Volte Power supply line
The five-voltage power supply line in this case was fine. now I had to find its reference point. For this, I set the multimeter to the buzzer and started testing the resistors around the system IC with the five-volt power supply line.
fault finding 10K resistor is bad
One resistor was having a five-volt power supply connected to the next point of this resistor, and another resistor was being grounded. The center point of these two resistors was the 2.1 V reference point. This voltage divider had a 10k resistor damaged. It had value inaccuracies. I replaced this chip resistor, so my fault was fixed.
fault image
With this article, I also attached the photo, which manipulated the fault area and fault part to make the article easier to understand.
Conclusion
In this case, the way I traced the fault, this is the correct way to reach the fault.I used to take a lot of time on a fault and write it in the form of an article that fellow technicians can learn something from it such a chip level fault finding you won’t find anywhere.
Sony Led Tv Repair Center Lahore
How to fix Sony TV 3 time blink KDL-50W800C In this guide, you saw how to diagnose and resolve the 3-blink fault. It was found to have a 10K raster fault. By replacing it, our fault was fixed. These are voltage divider resistors that provide reference to the system IC. How to diagnose this voltage divider has also been explained above.
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Shaukat Ali has over 30 years of experience in LED TV repair, specializing in chip-level repair work. He is an expert in Sony LED TVs, and also repairs other major brands like Samsung, TCL, Orient, and Haier. His expertise includes display panel faults, motherboard issues, power supply circuits, T-Con, and HDMI faults. Based in Lahore, he shares real-time fault finding cases from daily repair work to help technicians and learners with practical experience.
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