Here is the schematic for the power supply.

Here are some test voltages:

http://forum.allaboutcircuits.com/picture.php?albumid=211&pictureid=2088

Hi MrChips,
I downloaded the schematic of this power but I can't appreciate the value of some resistors. Could you help me with a better picture?
thank you so much.

Moderator edit: New thread created from this.

 

Here is the original service manual.... Page 25 circuit diagram.

What points are the voltages wrong?
This is a classic switch mode psu using the TL494 chip, is the 12V standby there when it goes dead?

https://www.manualslib.com/manual/1437243/Philips-Hts3544-37.html?page=25#manual