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Hi, Power light blink 3 times shows that convergence out ICs got defective and need to be replaced. If you are handy with electronics stuff repair and can solder parts in circuit board with proper tools then replace two big black ICs, convergence out, mounted on aluminum heat sink. Or call local tech to fix it. Let me know if you have additional question. Thanks.
Your TV is experiencing a convergence issue as indicated by the 3 blinks. The only way to fix this is replacing the convergence ICs. It is not a hard task to replace these ICs. You just need to know how to solder and work on printed circuit boards.
The convergence ICs are mounted on a large heat sink and are marked with codes starting with the letters STK and there are two of them. You need to replace both.
Look for the heat sink with two ICs mounted on it and check the markings.
Once found, cut the IC legs with a small side cutter and unscrew it from the heat sink. Remove the legs left soldered on the board.
Take note of the IC markings for ordering the right part and how it was installed. Don't forget to buy along with the IC a thermal compound.
Check the pico fuses on the same board. Most likely you will find a
blown one. These fuses look very much like a resistor, not like the
usual transparent fuse, and usually yellow.
Once you have the replacement ICs, put it on the board in the same way as it was installed before. Make sure the screw holes are aligned before soldering the legs into the board.
Put a reasonable amount of thermal grease/compound between the ICs and the heat sink and fix them with the screws.
Double check the board for any splash of solders that might cause a short circuit and damage the board.
The three blinks indicates a convergence IC fault. The convergence ICs must be replaced with the manufacturer replacement part. Use only the original replacement part. Your set uses STK392-110 convergence ICs. These ICs are mounted on a large heat sink. Yes, you can replace it yourself and save few hundred bucks. But you must be knowledgeable enough on how to solder, resolder and use a multimeter. You will need:
Heat sink grease or thermal compound
Small side cutter
Feel free to inform me if you decide to replace the ICs yourself
did you replace the convergence resistors with the ICs? Often the resistors will need to be replaced also when new ICs are installed. 3 blinks means convergence Failure so its either the solder connections on the ICs or the resistors need replacement. If you need more assistance please let me know.
those are the convergence feed resistors. # blinks on a panasonic means convergence IC failure. You will need to replace the two stk392-110 convergence ICs and the six resistors. You can get replacement ICs and resistors at the following link. http://servicemanuals.vstore.ca/
you need to replace both convergence ICs that is what the 3 blink error code is for your model. You need two STK392-110 Convergence ICs you can get replacement ICs at the following link with free instalation instructions. http://servicemanuals.vstore.ca/
It sounds as if your convergence ICs have failed again,However if you didnt replace the convergence resistors with the ICs that is most likely the cause of early IC failure. There is a quick test to determine if the ICs have failed. Remove the front speaker panel and access panel up front, and you will see the convergence panel with the two black heatsinks. Directly in front of those heatsinks are three wire clips that are for the convergence yokes, Unplug those three wire plugs and try turning on your set. If it comes on the ICs have failed, and the ICs and resistors should be replaced as a kit. You can get the repair kit for the JVC rear projections at the following link with free instructions. Heres the link. http://servicemanuals.vstore.ca/
Let me know if you need more information.