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replaced it. at least from wattage, battery is charging! orange light shows and board runs perfectly on battery and charger. thanks for the help!

board is working! I can tell it is posting because of power draw and fan being normal. But this board did have another issue which was the initial reason I started working on it. Board works when both charger and battery plugged in. When I unplug the charger, the board stays on, running off...

R7402 WAS MISSING- must have chipped off the board! will replace and update

3.3v

I do not have a scope, but there is no voltage on this rail no matter what I do. Tried measuring while I plug in board and also when I subsequently connect poweron pads and in SMC bypass mode. Also it seems like SMC bypass mode isn't even registered. Even when poweron pads are connected while...

G3H voltage is 16v when charger is connected 11.6v with just battery I will add that these voltages are the board not powered on... because it is a 2010 that doesn't auto power on when charger connected it goes between 16v and 11.6v. on one of my chargers it only does this once before the...

it stays at 0v. even in SMC bypass mode still 0v.

yes 3.3v also you were right about multimeter :) thanks

Board slowly spins fan to max, draws 6w. SMC bypass still draws 6w but fan spins up faster. ALL S5, S3, S0 on 5V and 3v3 are correct voltage (5.91, 3.85) as are G3H(9.5v) and 3V42. PP1V05_S0 and PP1V5_S3RS0 are 1.2 and 1.73v respectively. PPVCCSA_S0_CPU is 1.04v, but both PPVCORE_S0_CPU and the...

Board has good PPBUS_G3H(14.6v) and 3V42(3.92v) 5VS5, S3, and S0, as well as 3V3 S5, S3, and S0 are all good, at 5.87 os 3.86v. When power applied board draws about 6w but does nothing, no fans. In SMC bypass, fans run and board draws about 8w. GPU_VCORE fluctuates slightly around 1v...

both are 0.03v actually. but no shorts on either of them to ground

yes 3.79v

So replaced both these chips. Now green light comes on and board can boot when plugged in or when just on battery. However... battery still does not charge. When both battery and charger plugged in, no light at all- and power usage from wall briefly spikes to ~10w then back to 0w, and green...

yes there is 3.88v

it is 0.07v but not shorted to ground

NO problems with the resistors that I can see and they all matched their correct ohm values. Tried replacing BIOS chip to no avail. Tried reflowing CPU and PCH so i'm giving up on this one unfortunately. On to the next!

Yes I ended up realizing this by testing other boards. I'm pretty new to board repair and this is just me learning fast. However when I install L7030 there is a short to ground on the entire PPBUS_G3H. So something that is not supposed to be shorted is shorted. Probably beyond L7030. CHGR_PHASE...

Short was gone so I replaced U7000 with known working chip charger showed green light for a few attempts but then went back to showing nothing, now a buzzing noice comes from U7000. Still draws 3 watts however short on 19&20 is still gone old next to new voltages on U7000 (new voltages on...

I actually was measuring the voltages of U7000 not U7200. Sorry for wasting your time on that. Here are the correct voltages. The chip next to it, Q7221, was also not getting any voltage on any pins. Posted below are working, powered-on board voltages and dead board voltages on the right. so the...

yes 20 ohms