Sony KDL-40S2030 flashing red standby light 4 times

[Jabboy]

Hi Guys,

Hope someone can help me on this.
I have this TV which when plugged in turns on for about 3 seconds then immediately switches off leaving the red light flashing 4 times, pauses and then repeats this process.
anyone have an idea on how to diagnose the fault on this unit?
As always, any help would be much appreciated