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Hi guys, did a bit more measuring and found that I have no shorts on any rail I am testing, I am finding R6921 giving 5.02V when I think it should be 3.3v. swapped U7000 again just to be sure and still pulsing up and down. When I remove anything to do with PP3V3_G3H from the system such as U7000...

in Ohm mode I'm getting 3.2 Ohms. Measured on C1701. PPVCCGT_S0_CPU also measures the same. Mt thinking now is that it is TRYING to switch on, encounters a short on the CPU line and then pulses down for protection?

I didn't try to charge it. original battery was giving 0.0V. Tried a new flex, still pulsing. I did some measurements and thought I would check PPVCC_CPU_S0 - 0.002 on diode mode. Am I right in thinking this is far too low? it would explain a lot.. I will get pictures tomorrow once it's had...

That's the result of a spillage. I can charge the battery somewhat from a bench supply tomorrow to see but right now we don't have a known good battery to test. its a shame too as the board now looks extremely clean and this area was the only place that came into contact with liquid. maybe a...

Sorry I made a mistake as I was going off memory last night. I replaced U3200 as it's F3001 thats pulsing down to 0v and back to 5.2v. U3100 had no liquid near it, it was all on U3200 side. F3000 is also pulsing but only to 4.8v SMC_USBC_INT_L on R3038 is pulsing but from 0v-1.8-2v and back to...

Replaced 3 times from donor boards. All U7000 chips were doing the same pulsing.

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Ok guys, on mobile so please bear with me. i am at my wits end with this one, don’t get enough time to work on these as I have to help with customers on front and deal with phones etc. for rapid turnaround. we got in this touchbar MacBook Pro that had liquid damage all down the USB-C on the...