Hello,
this 820-3032 had 3x beeping ram. I gave all 16 Ram ICs a reflow and now it wont turn on. PP5V_S0 is there on the fan connector but the fan won´t spin. That is confusing to me. PP0V75_S0_DDRVTT is 0V so the ram is not powered. I followed this path and came to PLT_RESET_L and ISOLATE_CPU_MEM_L. They are both not present - that is why the ram has no power - and should be created by the PCH (as far as i understand). Diode mode readings:
ISOLATE_CPU_MEM_L : 0.5V
PLT_RESET_L : 0.425V
so they are not shortet.
Now i have no idea what to check next.
this 820-3032 had 3x beeping ram. I gave all 16 Ram ICs a reflow and now it wont turn on. PP5V_S0 is there on the fan connector but the fan won´t spin. That is confusing to me. PP0V75_S0_DDRVTT is 0V so the ram is not powered. I followed this path and came to PLT_RESET_L and ISOLATE_CPU_MEM_L. They are both not present - that is why the ram has no power - and should be created by the PCH (as far as i understand). Diode mode readings:
ISOLATE_CPU_MEM_L : 0.5V
PLT_RESET_L : 0.425V
so they are not shortet.
Now i have no idea what to check next.