Sharp tv Lc-80LE632u power led 3 blinks - Sharp Televison & Video

SOURCE: can not power it on, the power LED keeps blinking.

Most likely, the power board was defective. You need to replace it.

SOURCE: Sharp AQUOS LC-46D85U green LEDs blinking, no picture, no sound

Sharp warranty is the way to go.

SOURCE: sharp lc-46d64u blinking codes. power blinks 3

Very common in Sharp,tries unplug,replug back in,tries again off/on couple times,still happen blinks than ur main video board it dead.

SOURCE: Blinking power and opc leds on front of unit

From the information you have provided failed capacitors in the power supply is likely causing the problem. The safety circuitry shuts the TV set down when it detects a problem. This model of TV has over 2,000 parts which include millions of transistors inside the integrated circuits. The capacitors will change value, leak and become defective. Resistors will change value and burn. Integrated circuits and transistors can go bad. This can cause other components to become defective, which can have a domino effect and cause other parts to fail. Replacing one defective part may make the TV operate for a short time but the part will fail again since if the parts that caused the failure to begin with are not replaced. The only way to know for sure what is causing the problem, which parts that are no longer within factory specs and for proper repair all the electronics must be diagnosed by someone with the correct electronic test equipment and the skills to use the test equipment. The repair should cost about $250 if carried into a TV repair shop. A small TV repair shop will often charge less than a large repair facility.

SOURCE: I have a Sharp lc-46d62u and it blinking when i

I had this issue and Sharp sent out a local repair tech to install a new main circuit board, then two weeks later, a new side board (where the side inputs connect into the system)...