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sony KDL-WD655 no picture, led flashing 5 times

Good evening, 
does anyone have the Service Manual for sony kdl-wd655 ?
after 2 1/2 years the TV is broken, i guess its the t-con.
tV has no picture, backlight is ok, Sound is ok.
aT standby the power led is flashing 5 times red 
I am educated in electronics,  but without a wiring diagram i have no chance.
Thanks Hans
hans.franken@yahoo.de