PS5 EDM031 no power, no lights, boot sequence seemse good

[tarien]

Got in repair PS5 with EDM-031 PCB. Console dont give any light or beep sound. I checked coils no shorts at all, CPU 1V rail measure at about 0.3ohm is it good? All standby voltages are present. Board take at beggining abou 320mA and then goes to 8mA. Checked bios seems good by reading from logic analazyer. Also try uart code but they gives any HIGH errors. Do its possible that is caused by Southbridge or SSD controller?

[LaPCon_IT]

0.3ohm on 1V is good. Did you check the power switch board (voltage, shorts, flex cable etc.)?

[tarien]

Yes, no shorts but i measuerd some extra standby voltages and i got nothing, even for part of second on HDMI decoder, so i asume the problem is southbridge, ordered, will replace and give an info.