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PP3v3_G3H isn't present on charger (expected) or on battery. Both show 0.0v Its near on impossible for me to test around U6990 on battery but on the charger I get 5.2v on D6905 pin 2 5.1v on pin 3 On D6990, I get 5.1v on pin 2 but 0.0v on pin 10 enable.

I get 5.2v on both ports. The charge ports look perfect, all the fuzzy coating came off in the UC and no pins etc are burnt or tarnished. Any ideas?

I had an A1466 in the other day that was apparently needing a replacement main board (according to another repair shop) they wanted to replace the board for ?450.. It came to me for a second opinion and turned out to be a ?5 trackpad ribbon. They were charged ?49 ($65 USD) in total by myself...

When the battery is connected, I get 12.6v on PPBUS_G3H.. 0v when only on the charger though

After the board went through the UC, it actually looked great. Obviously something is bad but all the liquid damage appears to be at the DC end of the board

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I always take photos of the board before starting anything like UC.. would they help at all?

No different after the SMC reflow

Ive got a constant 5.2v on dc in now also

I'll flux and heat the SMC with 559 flux and give the cpu a little heat without flux (I'm assuming you didn't mean flux the CPU also)

I've put the board back through the UC, PPBUS_G3H is now sitting at 0v.. So I'm guessing whatever poor connection there was has vanished now.

It sometimes works and runs for a while, other times it starts for only 2 seconds. I?ll be away from work until Tuesday now but will carry on when I?m back. Thanks for your help so far :)

C5409 SMC_CPU_HI_ISENSE = 30MV C5680 SMC_CPU_VSENSE = 0.5-0.9 BOOSTING C5605 SMC_CPU_ISENSE = 0V C5615 SMC_GT_ISENSE = 135MV C5682 SMC_GT_VSENSE = 0MV C5691 SMC_SA_IMON_ISENSE = 359MV C5631 SMC_SA_ISENSE = 0MV C5523 SNC_3V3S5_ISENSE = 0.5V C5518 SMC_3V3SSD_ISENSE = 0MV C5690 -...

I'm struggling to be able to accurately check them.. They are all on the opposite side of the board. I need about 6 pairs of hands :(

so its all the vsense isense outputs I'm checking right?

AVREF_SMC is 2.98v

SMC bypass doesnt seem to work either now. Fan spins full for about 2 seconds but nothing more and no screen.

When it cuts power, the DCIN drops to 5.2v 0.02a

It turns itself off after a few seconds. Gets into the OS but thats about it before the power cuts off

I lied.. it just did smc bypass and started