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No, really 0V! Diode mode is: At C6905 - .54 At C6906 - .53

BTW where is the best place on that line to inject voltage?

Correction: Its 5.1V. Don't know what I did there... At R6920 its 5.3V at D6902 its 5.3V at Pin 1 and 3, Pin 2 (PPBUS_G3H_R) is 0V

Will do once PSU arrives. Also ordered a fresh can of freeze spray.

Pin 1 - 5.1V Pin 2 - 5.1V Pin 3 - 0V Pin 4 - 5.1V

Ah got ya, just wanted to know. Would never try that... I did find something curious though. On the PCH itself there is a tiny Capacitor. When I put my meter in continuity if beeps on both sides of that cap. On my donor it doesn't. Is that relevant? I'll get a new bench PSU (me idiot killed mine...

Also what are nominal Values for L7220 and L7260?

Removed both. Now .46 on L7220 and still .002 on L7260. Anything I could theoretically try? Out of pure curiosity: what would happen if I powered it up with those missing parts?

Diode Mode on PP3V3_G3H measured at R6923 is .397 and Voltages at U6903 are: Pin 1 - 0V Pin 2 - 0V Pin 3 - 0V Pin 4 - 0V Pin 5 - 0V Pin 7 - 0V Pin 8 - 0V Pin 9 - 0V Pin 10 - 0V It in fact doesn?t have the enable on Pin 10. I think I confused R6920 with R6921. Sorry! Mistakes sometimes happen...

Hi, have this Touch Bar Board here I'm having trouble diagnosing. It pulls a steady 0.015A at 5.2V but never jumps to 20V. PP3V3_G3H is missing, but the Enable on Pin 10 of U6903 is present at 5.4V. Anyone know how to proceed? This is one of my first TouchBars I'm working on so I'm not that...

It comes up as .39 on L7220 and .002 on L7260, is that of any help? Sadly completely out of donors

The measurements are: Pin 13 - .47 Pin 22 - OL Pin 29 - .45 Should I just order up a new U7201 Chip? I mean we don't fully know if the chip off of the donor board was any good...

Are these values of any use for further troubleshooting?

I did. I Always try avoiding to measure at the chip if possible... Remeasured everything, edited the post with all of the updated values

The Voltages are: Pin 23 - 12.83V Pin 12 - 3.312V Pin 13 - 1.5V Pin 22 - 1.6V Pin 29 - 1.2V Pin 21 - 3.1V Hope my Multimeter didn't slip on any of these....

Okay, no my Test charger just quit working Gonna grab another one and post those voltages

Just wanted to measure and my PPBUS is shorted again, 1.2V. No idea why!

Hi, thanks for your reply! Yeah, 3.02 should be fine I just wanted to verify. I have a Magsafe Light and PP3V3_S5 is 40mV so basically 0. Any idea on what to do next? Thanks!

Theonly thing getting a little hot is the PCH

Hi, have this A1398 with some super weird problems I?ve never seen before. I got it having a short on PPBUS. This was cleared after removing MOSFET Q7260 which cleared the short. Replaced it with a donor and as soon as I gave it power it got very hot and PPBUS was shorted again. I checked out...