Network keeps searching, no modem/imei baseband issue fix guide?

Hello guys. I work up today and the network keeps searching. I’ve narrowed down the problem to a baseband issue, since there is no modem or imei, so i would guess the baseband chip doesn’t receive any power. From what i’ve looked around it is a capacitor that fails, can someone who does this professionally let me know some schematics and what to replace to fix it? I’m pretty good with soldering, and watching Luis videos definitely helped me improve such micro work (only for hobby).

Kind regards