Samsung tv no standby completly dead

Hi there my Tv is completly dead. No standby light whats of ever. I already check voltage on power pcb

and on standby pin is nothing. But on “ power on" pin is 5v which os not coming thru to main board. I check all diodes on power pcb and they seems to be ok. Same with recti bridge. But I found one suspicious thing like unsolder pin (

). Also on t-con board one pin is missing not sure if it has to be like this.

I havent got big knowledge about fault finding. Help please.

On this thing with unsoldier pin and missing pad all 4 legs has 102v on input but this unsoldier just 4v on output.

Ok seems like this pin shoudnt be even connected-.-

Ok I was tracing 5v standby from standby pin and found this I edited photo with voltages. So there is n- channel transistor between pin and 5v source. And on his leg voltage is 0v. It means thats faulty? I was checkin o diode mode and other side has voltage drop but this doesnt.