how to fix Sony tv 2 Time Blink kdl-50w800C
Introduction
Came to my workshop for a Sony LED TV repair the customer said that as soon as they turned this set on, it went off and its red light blanketed. I turned the set on and it was going to two blank protection. I took time from the customer and booked the set for repairs.
fault tracing
I opened the set in the lab and started fault tracing it. I started checking the resistance around the system IC. I was looking for a voltage divider resistance unit that would make the reference volt for nineteen volts. these reference volts 2.1V go to the system IC so that the processor can monitor the nineteen volt power supply to ensure that they are the correct state after quite a search I found this voltage divider unit.
voltage divider
This voltage divider was based on two resistors. a resistor was connecting nineteen volts. it had a value of 220k. its second resistance was grounding with a value of 27.34 K.
fault finding
The center point of these two resistors is the reference point that goes to the system IC. the perfect 2.1 V voltage should be here. I subtly separated these resistors from the circuit and checked their value. I got its R1, the value of 220k, quite high. this resistance was doing about five hundred kilo ohms shows. I changed it, so my set started working perfectly.
fault image
I pointed out the fault in the photo, the fault location and the faulty part in it, and attached the photo with the article to make it easier for the fellow technician to understand.
Conclusion
This is my job, it teaches us that we have to work hard in the most nuances to repair the chip level. when you get the job done successfully, the pleasure it brings is the setifection of a good technician.
Sony Led Tv Repair Center Lahore
If you also have a fault problem with your LED TV, you can contact us at Chip level repair. you can visit our contact this page and email it or talk by phone.
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