820-00165 no work

[lincev]

It doesn't work, no liquid damage or burned components. led green change orange without battery, I try with other I/o board and flex.

In bypass mode we managed to turn on but without image internal o external monitor (it's only possible with keyboard if we try to bypass with smc pads we can't)

some voltages:

PPBUS_G3H=8.53v
PP3V3_SUS=3.28v
PP5V_S0=5.10v

U5110
1 PP3V42_G3H=3.39v
4 SMC_MANUAL_RST_L=2.70v
5 SMC_RESET_L=3.35v
6 SMC_LSOC_RST_L=3.27v
7 SMC_ONOFF_L=3.38v
8 PP3V3_S5_AVREF_SMC=3.26v

any ideas? thank so much

 

[2informaticos]

"PP5V_S0=5.10v"
Was that in normal mode, or SMC bypass?

 

[lincev]

That was in normal mode without turning on with magsafe on orange led but without fan spin

 

[2informaticos]

If you get the MLB in S0 state in normal mode, then should have voltage on all big coils; check that.

 

[lincev]

I have found corrosion in C8111 R8111 and in C3280 and C3281 without short but I have still repaired the tracks because they did not have continuity

I do not have voltage in L7310/20 L7430 L3095 L7701

L7630=1v
L7560=3.28v
L7520=5.10v
L7130=8.5v

thanks

 

[2informaticos]

Post U7400 basic voltages: 12, 16, 17, 6.

 

[lincev]

Yesterday after the repair it doesn't turn on, but I'm going to check these voltages and it turns on... I've been using it for a couple of hours and it seems to work
Thank you always for your enormous help

U7400

6 DDRREG_1V8_VREF=1.76v
12 PP5V_S5=
16 DDRREG_EN=
17 MEMVTT_PWR_EN=