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He just replaced u5600 himself, now were getting 4v, so he replaced it the again and were still getting 4v.. im heading home now but ill check again on monday.

Okay good news. replacing isl brought us back to the last step. it turns off in bypass mode but dies without bypass. r7151 is 8.56 r7152 is 8.56

Sorry my bad i misunderstood. ill need to do a bit more research tomorrow on my day off, my boss went ahead and replaced the isl chip anyway. Ill get you voltages afterwards if its still not working. thanks!

F7140 is 0.152v on pin 2 isl6259 2 is 0.614v 3 is 0.512v 9 is 0.705v 12 is 0.306v 13 is 0.481v 15 is 0.724v 17 is 0.659 k ohm 18 is 0.655 k ohm 19 is 0.267v 20 is 0.269v 27 is 9.47 m ohm 28 is 5.81 m ohm think that about covers it. On this boad its called u7100, just checking thats what you...

Just to check, resistance to ground is measured via the ohm selection and with the board being unpowered. black pin on ground red on output? or both on either side of the component.

Okay, im practically getting 0 volts on ppbus g3h. i measured this from f7700 and f7140 on pp3v42_g3h im getting 3.419 volts. measured this on c5120 r5127

I must have misread the schematic or something. Ill get those measurements now.

It is good experience yes. And being new to this, thats very much what i need. Just to check to check oltages for 3v2 and ppbus_g3h i put one probe on earth and one probe on the corrosponding component. (ill check schematic to figure out which components that is). How do you know what voltages...

my mistake, I should i have said i was plugging it back in to double check the dc values just incase i measured them wrong. Any idea where to go from from here? No light no fans =/ or do you think this is a done board,

I should mention before posting this I tried another DC board and flex and charger

Okay just plugged it in to go measure those values, I'm no longer getting a light or fan spin.

i presume you mean in dc mode? both are reading 0 volts

I could not find r7052/51 but on amon sense r5431 i get 0.241 on bmon sense r5472 1.051

C5505 reads 1.426 c5514 reads 3.119 but q5510 on pin 3 measure 18.5v

Should we reflow smc

smc dcin vsense is 18v smc pbus vsense is 8.5v smc cpu isense is 0.122v we have no u5570 we have no u5560 we have no u5590 cpuvr adjust isense is 0.003 no u5670 any more we need?

smc bypass boots.. doesnt seem to be turning of altough fans are running extremely loud.. could this mean dead smc?

Pin 9 is fluctuation between 0.120 and 0.183v pin 15 is 0.072 each time the fan starts to spin up and drops to 0

Left for the weekend. Will tell my boss who Is working today your instructions .thanks greatly for the help :)

The board does not start on charger only. scl is giving 3.414 SDA is giving 3.414