Technika LCD32-270 - No power

My name is Ray located in the USA. A person brought me a Tecknica LCD32-270 Main board number: MSD306.68 11346. I can't find any service literature here in the USA for Tecknica. My question is: on the main board at the 10 pin connector there is 2 pins labeled
P5V I'm not familar with this. I assume it's 5 volts but what is the " P " stand for. Both have zero volts. Is it 5 volts from main board. Without a schematic I'm lost. Hope someone can help me. Thanks.

Power supply is LK41800-01C or G0281-18014240A ?
Do you have +5V standby from power supply?

Yes I have 5VSB , the Power supply is all good except the P5V . I don't know what circuit P5V is for. Power supplies here in the USA are standard. PO, 5SB,5V, 12, 24 ect... Thanks for getting back to me

Mainboard is T.MSD306.68A 11346

Check U2 (LM1117 ADJ) on main board, for low output (should be about 1.8V).
Check SMD diode D1, D2 (marked M7) beside U1 for not supplying 3.75V to regulator U1, on main board.
Standby led is on?
If you need dump for memory U10 GD25Q32

Thank you for replying. No there is no Standby led. The U2 makes sense. I'm going to check the other components also. I will let you know if that's OK.