820-3437-Bwith no wifi. Tried 3 different cards, cleaned the port, installed 3 different OS´s.
J3501 Voltages:
PP3V3_WLAN: 3.351v
WIFI_EVENT_L: 1.0v
PCIE_CLK100M_AP_N: 0.5 mv
PCIE_CLK100M_AP_P: 0.3 mv
PCIE_AP_D2R_P: 1.6 mv
PCIE_AP_D2R_N: 1.7 mv
AP_PCIE_WAKE_L: 3.35 v
AP_RESET_CONN_L: 32 mv
AP_CLKREQ_Q_L: 3.3 v
USB_BT_CONN_N: 12mv
USB_BT_CONN_P: 10 mv
PP3V3_S4: 3.35v
U3540 voltages:
PP3V3_S5: 3.35v
P3V3WLAN_VMON: 1.0v
AP_RESET_L: 3.3v
AP_RESET_CONN_R_L: 3.35v
SMC_WIFI_PWR_EN: 3.34v
AP_CLKREQ_Q_L: 3.29v
AP_CLKREQ_R_L: 3.3v
J3501 Voltages:
PP3V3_WLAN: 3.351v
WIFI_EVENT_L: 1.0v
PCIE_CLK100M_AP_N: 0.5 mv
PCIE_CLK100M_AP_P: 0.3 mv
PCIE_AP_D2R_P: 1.6 mv
PCIE_AP_D2R_N: 1.7 mv
AP_PCIE_WAKE_L: 3.35 v
AP_RESET_CONN_L: 32 mv
AP_CLKREQ_Q_L: 3.3 v
USB_BT_CONN_N: 12mv
USB_BT_CONN_P: 10 mv
PP3V3_S4: 3.35v
U3540 voltages:
PP3V3_S5: 3.35v
P3V3WLAN_VMON: 1.0v
AP_RESET_L: 3.3v
AP_RESET_CONN_R_L: 3.35v
SMC_WIFI_PWR_EN: 3.34v
AP_CLKREQ_Q_L: 3.29v
AP_CLKREQ_R_L: 3.3v