Vistron 37" lcd main board

[fix2003]

have one here that i have been unable to fix so it has been left with me
board type HH-LCD.PCB.YD-106
FAULT IS
When standby button is depressed, the blue indicator light at the front panel could be turned on and off but always with a black screen without any picture or sound

there a guy on ebay offering a fix for these fault anyone know what it is ??
cheers