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board was liquid damaged near the SMC area and ISL area. before i get no fan spin, no green light. after a SMC reflowed and replaced the ISL then i get fan spin and a green light and charging light. CPU does get warm. but no chime. no beeps when i removed the RAM. but i do get 1 beep after...

this board was too easy, reflowed the SMC and it worked! no other place has corrosion. passed all ASD... ok move on to next board. cheers.

SMC_RESET_L = 3.395v - yes high,

i only get green light if i use a fresh charger that has been used with a known working board before hand. if i unplug then replug i dont get green light. corrosion next to SMC, C6992 - 16v probably have shorted SMC_ONOFF_L. i then cleaned the corrosion, i haven't clean the SMC. no IPA went...

Hi Duke here is the file: https://drive.google.com/open?id=1ns...2cq98DW2mxORt9 Serial no. C07Q628JG1HV

clover was used, and has corrupted the the SPI rom. Duke can you able to fix if i give you the corrupted rom, then copy the ME region over to a good rom??

https://www.rossmanngroup.com/boards/forum/tools/20416-a1278-macbook-ram-slots-repair-solution

C5025 was the culprit. i took this one out and this cap does beeps on my fluke. replaced with one from a donor board, now the board can power up normally. tested all good. thank you Duke and take care!

ok, the 4 caps are shorted to GND. just compared with known working board.

0.051v on PP3V3_S5_AVREF_SMC i get 3.4v on pin1,3 on U5010 So U5010 is bad or one of the 4 capacitors on the bus is leaky and pulling it down?

17/18 : 2.8 ohms 27/18: 20.2 ohms i've checked all the resistors around the iSL, they are within specs.

not liquid damage, cant see any corrosion at all under a microscope (damn it). never been rework. Using a ?Real Genuine Original Apple Charger! green light, orange light, can charge the battery?. if I press and hold the Power Button for 2-3 second, the board will power up to OSX and fan spin...