Sony KDL-40W2000- 4 Flashes

[pan]

Hi All,

I’ve picked up a Sony KDL-40W2000 for repair.
On switch on there is audio and menu just for a second or two, then the set cuts out and the red LED flashes four times then stops for two secs then repeats.
I’ve checked supply voltages they seem ok.
I understand the inverter board can cause this prob. The 18v on the board is there.
I’ve checked the transformers on the inverter they seem ok.
Has anyone any ideas.
Thanks
Pan