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
fes_786
New Member
Last Activity: 07-31-2023, 06:20 PM
Joined: 06-07-2023
Location: North East
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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???Last edited by fes_786; 06-16-2023, 01:41 PM.Leave a comment:
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Re: macbook pro A1706 820-00239-09 no boot
board 1 = 13.07v on both sides of F7000
[B][U]PBUS RAILS:[/U][/B]
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)
[B][U]3V3 G3H RAILS[/U][/B]
PP3V3_G3H = (3.3V schematic) (measured= 3.416v)...Leave a comment:
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macbook pro A1706 820-00239-09 no boot
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...Last edited by fes_786; 06-15-2023, 05:45 PM. -
Re: Boardview and schematics for 820-00239-A Macbook pro touchbar?
thank you .... this will help me fix to boards hopefullyLeave a comment:
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Re: New Members - please post your introductions here
hi guys
been into electronics and soldering for a long time...... now got few apple boards to repair so see how my intro to micro soldering goesLeave a comment:
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