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yeah continuity is good, all sensor is connected to each other and to u5511's caps too. heat pch but still the same, time to let it go then.. thanks for the guidance piernov and 2informaticos!

parallel caps is not corroded

u may not believe me.. but yesterday the known good bil doesnt work, today it work normally -.- thanks a lot..

Known good logicboard is working correctly with that Bil, u suspect the bil right?

smc_lid is 3.4v without bil, with bil connected, its 0v, bil is known good.. , no short too with bil connected

yeah ta0p is the only failing sensor, and some memory test too i have replaced q5510 and q5520, but still the same.. board is relatively clean off corrosion..

hi this board came in with not charging, solved by replacing r7051/2. found out bil connector is bad,but even with KNOWN GOOD bil attached,fan will spin but no boot (blank display), if i unplug bil it will boot normally. sponge has been removed, bil looks good, sda scl diode mode is 0.455 and...

sry I mean u4580..

disconnecting webcam airport still same u4850 doesnt look too good, but does it matter ?

trackpad connector looks good the backside of trackpad connector near u5805 has a bit of greenish thing.. but im not sure where's the wrong unless i measure something.

trackpad and the cable surely good..,other board works flawlessly on that cable and trackpad

this macbook came in alive, but cursor is staggering, and macbook is slow, fan maximum, i run asd 3s155 os version, and see that TA0P ambient air sensor is failed smc have greenish thing near it, and i already reballed smc but still the same, i can't seem to locate ambient air sensor location..

there's one damaged crystal near u2800, changed it and all good now, its not in a schematic but. its. beside .... ( i will insert the componen name after i get. back. to shop)

do you mean q3100 / u3100 ? i changed q3100 but still the same, now all port doesnt detect..

changed q7080, ppbus back 12.26 changed smc, ppbus 12.6v thanks a lot, solved..

i think it correspond to u3100, should i change it ? or is something shorting ?

i notice that some port detected external usb.. but one particular port kill my external flashdrive ( it smoke when I plugged it ), its the left second port which is closest to the trackpad ( the sidethat doesnt have headphone jack ). customer actually have told me this particular port killed...

1.1v at l7030 with f7040 removed.

i have changed u7000 multiple times, but all same, ppbus is still at 1-1.1v.. im rather sure the problem isnt u7000 then

i usually look for another post as reference, but low ppbus's post is too limited.. i can assure u7000 soldering is good, maybe the chip itself is bad ?