Hi my ps4 has stopped working and doesnt turn on at all, ive tried different outlets and different power cables for the ps4, still no luck. Ive pulled it apart and had a look at the power supply board and mother board aswell as dusted it all out. The mother board has yellow stains/ dots near the hdmi port and some other random spots around the mother board. I have the first ps4.

Does anyone know whats wrong? Id rather fix it than pay for a new one.