KDL-40S2010 SONY.4XFLASHES STANDBY LIGHT.

[maff99]

Hi guy's, got one of these sony 40" l.c.d.'s which when switched on sound may be for 1sec followed by stby led with 4 flashes.psu voltages all seem to be correct.Not even a split second of light on screen.
tested back lights they all seem o.k.anybody got any ideas. thanks Maff.