Sony KD-49XF809y doesn't turn on

[Zetabeta87]

Hi everyone!
I have a 2018 Sony kd 49XF8096 that suddenly stopped turning on: No LED lights up, and it doesn't respond to the power button or the remote control.
The power supply delivers 19.45vand I simply tried to check the fuses on the 2 boards (power and main) but everything seems ok. I have no references on where to test the voltage, but somewhere on the mainboard I also detect some, so you can't to understand which card may be to blame.
Can anyone give me some advice? I haven't found anything online

Thanks so much!!!

[Gjackson]

Hi!

Do you get a standby light? I would start by checking if the PSU outputs 19.45v when it is plugged into the board, from the connector on the small power PCB.

Next If it is present I would check the voltage on those 3 inductors, the grey box looking things on the small PCB

[Zetabeta87]

No, none of the LEDs light up. I checked and the voltage even when connected remains at 19.4v (connector pin under the PCB).
Testing inductors pin to gnd I get, respectively each pin: 19.4-19.4v, 19.4-19.4v and 12.5-6v (lower-right one, near the writing).

[Zetabeta87]

I haven't found the solution yet, without intervening on the card I'll replace it and I'm thinking about the mainboard but I'm not sure it's the one, does anyone have any advice?

[zomi]

Most likley the main board.. emmc gone..
You can check for voltages around the emmc .. they should be there.. but corrupted emmc not letting it work