The set switches ON, but no screen. No sound. Blue light is in ON mode, is blinking 5 times, a short pause and then starts blinking again. After this short pause, the light may blink three of four times in rapid succession.
The fault might be either to its main power regulator board, or Y sustain board. To make sure which section has the fault, disconnect the Y Sustain power supply connection and turn on the set. If the unit stays ON with no red light, then the Y-Sustain board is faulty.
To locate Y Sustain board, open the back cover of the TV. Looking from the back of the TV, Y-Sustain board can be located at its left side, and the main Power Regulator board at the center.
Even if the unit behaves the same, with blinking light, make sure that the main power regulator board has the fault. It will be best to replace this board as card basis, especially to plasma TVs, rather than making 'surgery' to it.
