Hello,
Board : Foxconn P55A
Socket : 1156
CPU I5-750
Before problems that are solved:
2.9 V leak to PCI slot pin 2. Defective diode A1D3
Defective capacitor KEC1 under PCI-x slot
Current state of board:
5V_Stdby : OK, 3V_Stdby: OK, 5V_POwerOK : OK
Starts up, BIOS executes code until checking for RAM and stays there with 1 beep pause 1 beep ( AMI BIOS - memory refresh )
CPU_VTT : 1.1v
DDR3_V : 1.6v
CPU_Vcore : 0.888v
PCH : 1.05v
DRAM_vref: 0.750
All voltages to RAM slots checked and OK, replaced processor with another 2 , same result, no RAM detection
Only obvious problem would be the PCH die which it's slightly chipped on one side. see the picture attached.
Any tip would be highly appreciated



Alex.
Board : Foxconn P55A
Socket : 1156
CPU I5-750
Before problems that are solved:
2.9 V leak to PCI slot pin 2. Defective diode A1D3
Defective capacitor KEC1 under PCI-x slot
Current state of board:
5V_Stdby : OK, 3V_Stdby: OK, 5V_POwerOK : OK
Starts up, BIOS executes code until checking for RAM and stays there with 1 beep pause 1 beep ( AMI BIOS - memory refresh )
CPU_VTT : 1.1v
DDR3_V : 1.6v
CPU_Vcore : 0.888v
PCH : 1.05v
DRAM_vref: 0.750
All voltages to RAM slots checked and OK, replaced processor with another 2 , same result, no RAM detection
Only obvious problem would be the PCH die which it's slightly chipped on one side. see the picture attached.
Any tip would be highly appreciated



Alex.