macbook pro A1706 820-00239-09 no boot

[fes_786]

macbook pro A1706

BOARD 1: 820-00239-09 = 20v 0.125a usbc


BOARD 2: 820-00239-A = 20v 0.016a usbc

i have both these boards and they do not power up

on board 2 i have a short on c8006 pp1v0_sus 0.03ohm to ground

board 1 i have 1v on c8006

im new to macbook board repair so please be patient with me

could someone help me with which power rails to follow and what order do they turn on

ive been messing around with open board view and a schematic i found on this forum but im stumped

thanks

[mon2]

Re: macbook pro A1706 820-00239-09 no boot

You have 20V being negotiated which is a good start and confirms that the CD321x TI ACE controllers are functioning correctly.

Review the voltage to ground of PPBUS_G3H. Measure (carefully) on each side fuse F7000.

[fes_786]

Re: macbook pro A1706 820-00239-09 no boot

board 1 = 13.07v on both sides of F7000

PBUS RAILS:

PPBUS_G3H = (13.1V schematic) (measured= 13.07v)
PPBUS_HS_CPU = (13.1V schematic) (measured= 13.06v)
PPBUS_HS_OTH5V = (13.1V schematic) (measured= 13.07v)
PPBUS_HS_OTH3V3 = (13.1V schematic) (measured= 13.07v)
PPBUS_S4_TPAD = (13.1V schematic) (measured= 13.06v)
PPDCIN_G3H = (20V schematic) (measured= 20v)

3V3 G3H RAILS

PP3V3_G3H = (3.3V schematic) (measured= 3.416v)
PP3V3_G3H_SMC_ISNS = (3.3V schematic) (measured= 3.416v)

RTC RAILS

PP3V0_G3H = (3.0V schematic) (measured= 3v)

IMVP Rails (down???)

PPVCC_S0_CPU = (1.5V schematic) (measured= 0.2v)
PPVCCSA_S0_CPU = (1.5v schematic) (measured= 0.2v)
PPVCCGT_S0_CPU = (1.5v schematic) (measured= 0.2v)

CPU VCCIO Rails

PPVCCIO_S0_CPU = (0.95v schematic) (measured= 0.96v)

CPU EDRAM Rails (down??)

PPVCCEDRAM_S0_CPU = (1.05v schematic) (measured= 005.7mv)

PCH Prime Core Rails

PPVCCPRIMCORE_SUS_PCH = (1.0v schematic) (measured= 1.0v)

1V2 Rails

PP1V2_S3 = (1.2v schematic) (measured= 1.2v)
PP1V2_S3_CPUDDR = (1.2v schematic) (measured= 1.2v)
PP1V2_S0SW = (1.2v schematic) (measured= 1.2v)

0V6 Rails

PP0V6_S0_DDRVTT = (0.6v schematic) (measured= 598mv)
PP0V6_S3_MEM_VREFDQ_A = (0.6v schematic) (measured= 0.6v)
PP0V6_S3_MEM_VREFCA_A = (0.6v schematic) (measured= 0.6v)
PP0V6_S3_MEM_VREFDQ_B = (0.6v schematic) (measured= 0.6v)
PP0V6_S3_MEM_VREFCA_A = (0.6v schematic) (measured= 0.6v)

1V8 Rails

PP1V8_SUS = (1.8v schematic) (measured= 1.8v)
PP1V8_S4 = (3.3v schematic?) (measured= 1.8v)
PP1V8_S3 = (1.8v schematic) (measured= 1.8v)
PP1V8_S3_MEM = (1.8v schematic) (measured= 1.8v)
PP1V8_S0 = (3.3v schematic?) (measured= 1.8v)

1V0 Rails

PP1V0_SUS = (1.0v schematic) (measured= 1v)
PP1V0_SUSSW = (1.0v schematic) (measured= 1v)
PP1V0_S3 = (1.0v schematic) (measured= 1v)
PP1V0_S0SW = (1.0v schematic) (measured= 1v)

T208 Rails

PP3V3_S5_T139 = (3.3v schematic) (measured= 3.3v)
PP3V3_S4_SOC_PMU = (3.3v schematic) (measured= 3.3v)
PP5V_S0_T139 = (5v schematic) (measured= 5v)

5V Rails

PP5V_S5 = (5v schematic) (measured= 5v)
PP5V_S4 = (5v schematic) (measured= 5v)
PP5V_S4SW = (5v schematic) (measured= 0v)
PP5V_S4SW_ISNS = (5v schematic) (measured= 0v)
PP5V_S0 = (5v schematic) (measured= 5v)
PP5V_S0_KBD = (5v schematic) (measured= 5v)

3V3 Rails

PP3V3_S5 = (3.3v schematic) (measured= 3.3v)
PP3V3_SUS = (3.3v schematic) (measured= 3.3v)
PP3V3_S4 = (3.3v schematic) (measured= 3.3v)
PP3V3_TBT_X_S0 = (3.3v schematic) (measured= 3.3v)
PP3V3_TBT_T_S0 = (3.3v schematic) (measured= 3.3v)
PP3V3_S4_BT = (3.3v schematic) (measured= 3.3v)
PP3V3_S4_TPAD = (3.3v schematic) (measured= 3.3v)
PP3V3_S4SW_SNS = (3.3v schematic) (measured= 0v)
PP3V3_S5_SSD_LB = (3.3v schematic) (measured= 3.3v)
PP3V3_S5_SSD = (3.3v schematic) (measured= 3.3v)
PP3V3_S4_MESA = (3.3v schematic) (measured= 3.3v)
PP3V3_2V7_NAND_VCC = (2.7v schematic) (measured= 2.7v)
PP3V3_S0 = (3.3v schematic) (measured= 3.3v)

Missing the following =

IMVP Rails (down???)

PPVCC_S0_CPU = (1.5V schematic) (measured= 0.2v)
PPVCCSA_S0_CPU = (1.5v schematic) (measured= 0.2v)
PPVCCGT_S0_CPU = (1.5v schematic) (measured= 0.2v)

CPU EDRAM Rails

PPVCCEDRAM_S0_CPU = (1.05v schematic) (measured= 005.7mv)

PP5V_S4SW = (5v schematic) (measured= 0v)
PP5V_S4SW_ISNS = (5v schematic) (measured= 0v)

PP3V3_S4SW_SNS = (3.3v schematic) (measured= 0v)


sorry for long post ...... i thaught i might aswell measure them all

board 2 = 13.09v on both sides of F7000
board 2 i think i will make a new thread

[fes_786]

Re: macbook pro A1706 820-00239-09 no boot

R7103 - ALL_SYS_PWRGD = 3.27v

u7800

pvccio_pgood = 3.3v
p1v8sus_pgood = 3.3v
cpu_vccst_pwrgd = 1v
s5_pwrgd = 3.3v
p5vs4_pgood = 3.3v
cpuvr_pgood = 3.3v
p1v0pch_pgood = 3.3v
p1vsus_pgood = 3.3v

could u7210 & u7220 be faulty?? or cpu dead??

according to all those readings it should boot up???

[fes_786]

Re: macbook pro A1706 820-00239-09 no boot

Looking under thermal camera

A section of the cpu gets hot around 40c so im guessing if the cpu rails were shorted to ground by a cap cpu wouldn’t b getting power to heat up

I think cpu is fried internally and shorting thats why cpu rail gets pulled to 0.0057mv
140ma draw on usb

If anyone has any ideas or thinks it’s something else then please say otherwise boards going on spares pile

Now going to test BOARD 2 see if that 1 i can fix