manumathew.017
Member
Before removing the motherboard I could see 20V and 2.80Ampere current. Continues to chime sound (Not very loud) when I open the lid. Sometimes (I think after SMC reset) I can see an apple logo coming and going without backlight.
I have removed the logic board the current/power consumption is 20V and 0.44Ampere (8.83W).
Here are the voltages
L3500 - P5VUSBC_X_R - 0V
L8410 - PPVOUT_S0_LCDBKLT -0V
L7030 - PPBUS_G3H - 13.11V
L7660 - PP3V3_S5 - 3.367V
C7651 - PP5V_S5 - 5.150
L7600 - PP5V_S4 - 5.153V
L7700 - PPVCCEDRAM_S0_REG_F - 1.056
L7430 - PPVCCGT_S0_CPU - 0V
L7420 - PPVCCGT_S0_CPU - 0V
L7410 - PPVCCGT_S0_CPU - 0V
L7210 - PPVCC_S0_CPU - 0.629V
L7220 - PPVCC_S0_CPU - 0.629V
L7270 - PPVCCSA_S0_CPU - 0.897V
L8000 - PP1V0_SUS - 1.028V
L7960 - PPVCCIO_S0_CPU - 0.959V
L7900 - PP1V2_S3 - 1.206V
L8050 - PPVCCPRIMCORE_SUS_PCH - 1.013V
Could someone please give me some advice on how to proceed further to diagnose and fix the issue?
History of this board: As far as I know someone changed the display, Maybe some nonprofessional person. This issue started from there,
Thanks in advance
Br
Manu
I have removed the logic board the current/power consumption is 20V and 0.44Ampere (8.83W).
Here are the voltages
L3500 - P5VUSBC_X_R - 0V
L8410 - PPVOUT_S0_LCDBKLT -0V
L7030 - PPBUS_G3H - 13.11V
L7660 - PP3V3_S5 - 3.367V
C7651 - PP5V_S5 - 5.150
L7600 - PP5V_S4 - 5.153V
L7700 - PPVCCEDRAM_S0_REG_F - 1.056
L7430 - PPVCCGT_S0_CPU - 0V
L7420 - PPVCCGT_S0_CPU - 0V
L7410 - PPVCCGT_S0_CPU - 0V
L7210 - PPVCC_S0_CPU - 0.629V
L7220 - PPVCC_S0_CPU - 0.629V
L7270 - PPVCCSA_S0_CPU - 0.897V
L8000 - PP1V0_SUS - 1.028V
L7960 - PPVCCIO_S0_CPU - 0.959V
L7900 - PP1V2_S3 - 1.206V
L8050 - PPVCCPRIMCORE_SUS_PCH - 1.013V
Could someone please give me some advice on how to proceed further to diagnose and fix the issue?
History of this board: As far as I know someone changed the display, Maybe some nonprofessional person. This issue started from there,
Thanks in advance
Br
Manu