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Ok, got it, didn't realize there were so many. I checked the other LDO outputs. They're the same for each CD3215. .480 .470 and .495. No outliers. TBA_AUX_DET is at 1.28 V and TBA_VDDA/P are at 2.3V. After letting it sit overnight, it did go back up to 20V again the first time I plugged it in...

LDO's are all at .495. R6921 is good at 0 ohms. PM_EN_P3V3_G3H is at 0V.

After sitting for weeks, the first time I plugged it in, it went up to 20V and the CPU heated up. By the time I started testing for voltage is was back down to 5V. U6903 Voltages: 1 0 2 5V 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 Pins 1 and 8 had some very small amount of varying voltage...

I did additional testing with the LCD disconnected and those lines were open and it looks like they all just lead to the CPU so that's why I was thinking I was out of luck. And yes, tried my known-good test screen. Also, without a schematic/boardview, I'm not going to be able to run these down...

No shorts, but pin 6 is reading 1.6 in diode mode and pins 10 and 14 are reading open. They're all supposed to be in the .700 range so I'm thinking this might be a lost cause.

Being that I don't have a board view, I did a common sense search for shorts and couldn't find anything that seemed wrong. Not sure what more I can do.

The board definitely turns on. Caps Lock lights up. Fan is spinning up after a minute. But with the internal LCD connected, the external monitor does not come up.

This board had very minimal signs of liquid-damage near the USB-C ports. I attached a picture. It's not the best but you can see where the spill hit. This will turn on and work fine with an external monitor but if I attach the LCD it won't display anything on either screen. Any ideas or hope to...

This board keeps killing batteries. It had some very minor liquid-damage on the LCD connector. Nothing near U7100 or the SMC. Diode measurements on the SCL and SDA lines are good at .502 and .500. The battery will work for a while but then lose it's capacity and die. We're on the third one. As...

Ah, yes, thanks, I forgot about that trick. It will almost certainly boot that way, but what's my next move after that?

This came in with no spill, with a swollen battery and 5V on USB. I'm not finding any shorts. PP3V3_G3H is at 0V. No short. PM_EN_PP3V3_G3H is at 0V. Diode measurement is good at .580. Is this just a damaged U7000?

Yeah, I always use a USB test drive for testing. If I unplug the lifeboat, it turns on quickly and comes right up with the option-key boot select screen. Once I plug in the lifeboat everything slows down. Either way, I'm not getting beyond the Critical Update screen. I'll never get past it if...

So this is actually getting video, but it's running so slow I didn't realize it because it took so long for the video to come up. Online test came back with VDH002 "There may be an issue with a storage device". The only corrosion I could find was near J5260. But something might have hit near...

Ok, you're right, the diode measurements for the LDO lines are really low. PP3V3_UPC_XA_LDO is at .035 and PP3V3_UPC_XB_LDO is at .085. Not sure what's pulling them down.

This was not spilled on. The left side USB ports don't work. I replaced the USB connector and it's still the same. The front one shows absolutely nothing on the USB meter. The back one shows 5V but no current. The right ports work fine. But just now, after trying the left rear port again, it...

I've cleaned this board up after some minor corrosion. Replaced U2890 and anything around it that looked bad. Board has 3V3_LDO and PP3V3_G3H. I can't see anything else that would keep it from getting 20V but it's now just cycling between 5V and nothing on the USB input. Screen goes blank and...

I removed a short on PPVIN_G3H_P5VG3S (shorted C7661) and was getting 20V but no current. Found another short on PP5V_G3S. It was a shorted U8110. Replaced. Still only 20V with no current. I can't find any other shorts and never witnessed one on the CPU. Any thoughts on where to get next with...

Had a short on 3V3_S4, just had to hunting for it. Finally found it on C4202. Good to go now. Thanks for the help.

This came in as a no-spill but it looks like it was exposed to some type of very minimal moisture. Very subtle but I had to replace R3509 and R3539. Cleaned it in the ultrasonic. No change. I can't find any shorts. Every 5 or 6 seconds it will try to turn on and a small amount of current will go...

Thanks, yes, that's the only way I do an initial test - just the screen attached. Board sitting on desk with known-good test screen.