KDL-46EX700 5 Blinking Fix This Sony Bravia LED TV came to me for repair. When I turn on the TV, it shows a green light, and after a few seconds, it starts blinking five times. This LED TV belonged to a very old customer of mine, and for some reason he had given this TV to a clumsy technician. That technician took this TV to the bonding machine, guys, and they told him that this TV would not be repaired because there was a short circuit inside its screen.

Replacement LVDS Inductors 

I opened this set in the workshop lab and thought about the root cause of this fault. According to the principle, the first thing I should have looked at was the LVDS signal coming from the system board and the panel ID. The previous technician had replaced the LVDS inductor coils with 22-ohm resistors, which was a mistake. I installed the original coils on the main board. This did not fix my fault, but it was necessary for the circuit to be correct.

Trace Panel ID 

Now I had to check the communication of its panel ID data to see if this data is going from the system board to the T-con board or not. In this model, these two tracks come from the system IC to pin number 40 of the LVDS socket and from pin number 41 to the T-con board. I checked the continuity of these tracks, and they were absolutely correct. If you want to trace it, then check the system IC on pins 7 and 8 of chassis number IC 5000.

Screen testing 

I did all the necessary tests, but the 5 blinking faults remained in their place. Now I also started to wonder if there was any problem in its screen because even if this fault was a short circuit in the gate drive of the screen, the panel ID system would still send a wrong signal, and the system would consider it as protection. I tested its screen by installing a separate board, and an image appeared on the screen, which meant that my fault was in the T-con.

5 Blinking Fault Solution KDL-46EX700

Now my full attention will be on the T-con board. I separated this board from the LED and started checking its parts very carefully. On the top side of the T-con board, where the panel ID was going, there were some resistors and inductor coils installed in a line on the right side. I checked them with a multimeter and found that one of them, the inductor coil with chassis number B29, was open. This was the cause of the fault. I replaced this inductor coil, installed the T-con board, and switched on the LED TV. So my fault was solved.

• The TV showed the 5 blinking red light fault.
• I replaced the LVDS inductor coils with 22 ohm components.
• Carefully checked the panel to make sure it was intact and functioning.
• Tested the screen by connecting it to a separate main board.
• Replaced the B29 inductor coil which was causing the issue.
• After these steps, the 5 blinking red light fault was completely resolved.

Conclusion

In this case, you saw how we removed the 5 blink fault and this set came from the market and the technician had replied that this set will not work because your screen is shorted from inside. So I worked hard on this set and fixed it. Did you remove its fault? You will get all the details in this article, including pictures. And this is also a lesson for us that if we do the work with hard work and dedication, then there is no fault that we cannot fix. If you have any questions or doubts about this fault, you can ask in the comment box and I will answer.

FAQ

Q1: What does the 5 red blinking light on Sony KDL-46EX700 indicate?

A2: In this model, this fault is usually caused by the panel ID being disconnected from the system IC. The LVDS cable may be the cause.

Q2: How can I fix the 5 red blinking issue on my Sony KDL-46EX700?

A2: This fault is very rare in the main board. The T-CON board can be faulty.

Q3: What are the common causes of the 5 red blinking light error on Sony KDL-46EX700?

A3: The common cause is a faulty LVDS cable strap or corrosion in the LVDS connector.

Q:4 Is it worth repairing the 5 red blinking fault on Sony KDL-46EX700, or should I consider replacing the TV?

A4: If you have a professional technician do the work, this is normal work. After fixing it, there is no need to worry about your TV lasting long.

If you want to read the article How to fix 5 blink error Sony KLV-40BX450, click here.

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