mac 1278 (820-3115 ) power on pin

serwanjaf7

hello friend
please i need power on (start) pin on (820-3115 ) motherboard

thank you

vinservice

SMC_ONOFF_L on the GND
R5016 or R5015

serwanjaf7

thank you dear
i have all volts but no start
what it the problem can you help me please

vinservice

Is there a gong when turned on? Carefully inspect the motherboard for the presence of downed elements. To flash EFI

serwanjaf7

no any gong on the motherboard no start

vinservice

Carefully inspect the motherboard for the presence of downed elements. To flash EFI dump