MacBook Pro A2141 820-01700 Boot loop

[ACS-Repair]

Hello All,

I was handed a 2019 MacBook Pro A2141 that is boot looping. There is never a display or backlight but there is a chime about every 8-10 seconds.
I plugged in a USB-C meter and it see that it is negotiating 20 volts but there is no current draw at all. Voltage is stable, no resets.
It appears that the battery has a charge but possibly is not charging.

The following voltages are present:
PPBUS_G3H = 12.61V
PP3V3_G3H = 3.33V
PP3V3_GH3HRTC = 3.33

I haven't worked n one of these before so I have limited experience with it. I thought about doing a "revive" in DFU mode but I'm worried that there is more likely a board fault related to the lack of current draw.
I'm curious as to whether anyone has experience with this model and has a recommendation.

[mon2]

Check the voltage to ground of PP2V5_NAND_SSD0.

reference:

https://www.youtube.com/watch?v=7cNg_ifibCQ

https://www.youtube.com/watch?v=7RRnqb_62u4

[ACS-Repair]

Thanks mon2

I have 2.51v on both PP2V5_NAND_SSD0 and PP2V5_NAND_SSD1. The board is very clean although I have not removed the board yet to check the other side. The customer did not mention any liquid spill
and I am still trying to decide how far I want to go with this due to my lack of experience on this model.

I checked those links but my issue is different.

[ACS-Repair]

Just an update...

I was able to put the computer into DFU mode but the "Revive" process kicked out after going only about 50% on step 4 of 4 without reporting any errors.
I'm not sure whether my USB-C cables are good enough so I've order a quality data cable which will arrive tomorrow. I'll try again to see if this works any better.

[ACS-Repair]

I received a proper Thunderbolt cable and was able to connect to the computer, but I wasn't able to "revive" the computer. I was able to put the computer in Target Disk Mode but I'm waiting on the customer to provide the proper password.
I found that there is a definite backlight problem as well. There is 0v on the PPVOUT_S0_LCDBKLT. If I measure this to ground I get 42 ohms, which I believe means there is a short. I will disconnect the screen to make sure it is not a screen issue, but I see there are a number of faults like this with a shorted capacitor on that line.

[ACS-Repair]

Just an update... the customer all of a sudden decided that they did not want to repair their computer or do a data recovery. I've given it back and that's the end of it. Thanks for your response mon2.