Sony KDL-46EX523 standby light red, turns off upon power, no blinks

[SergeSF]

Hello all!

Dealing with a Sony KDL-46EX523 LED-backlit TV. Upon providing power, the standby LED is red, but when pressing power the LED goes off without any blinking. Pressing power again has no effect (does not go back into standby).

The power supply is an APS-285. Checked the 12V pins and 3.3V standby, both are present at standby and after pressing power. Caps look fine.

Hoping someone can shed some light on this

[CapLeaker]

Re: Sony KDL-46EX523 standby light red, turns off upon power, no blinks

Does the back light come on?

[SergeSF]

Re: Sony KDL-46EX523 standby light red, turns off upon power, no blinks

Not that I can see. I'll test the backlit output and see if anything happens when I first press power. I'm leaning to a bad PSU.

[CapLeaker]

Re: Sony KDL-46EX523 standby light red, turns off upon power, no blinks

Could be also a bad main board not sending BLon to the PSU.