7Pro not booting and drawing 0.13A on USB after NAND replacement

I have a OnePlus 7 Pro. The UFS NAND chip died, so I purchased another on AliExpress to replace it with.

First, I had to remove the can overtop of this area on the PCB. (I used a preheater, hot air, and a knife blade, but if anyone has any tips for this process, they would be appreciated, because it wasn't easy to get off).

While doing so, I accidentally knocked half a dozen or so components from their intended positions by poking in a bit too far. Most were just rotated, but a few were displaced entirely. I put the components back on the board the way they're supposed to go. I did lose one capacitor and wasn't sure of it's value, but it was one of the larger ones, so I went on the larger side and went for 10nF.

Reassembling and plugging the phone into power, a USB volt/ammeter shows me that it's drawing 0 amps at 5V. Using a multimeter, I found that certain capacitors were showing as shorted. I attempted voltage injection (1V, up to 550mA) with a thermal camera, but didn't see any hot spots.

I did knock the chip with 29 on it off the board earlier, so I removed it, but the short didn't go away, so I put it back and kept removing components until it did. Checking the PCB layout, the component that was showing as shorted was only connected to 3 or 4 other components, so there weren't many to eliminate. Strangely, two components that I removed were both showing as part of a shorted rail but were not connected to the same places at all (using a PCB layout viewer of the 7 Pro). I removed them both, and the short was cleared. I guess multiple components having shorts is possible. According to the PCB layout, these components are related to the rear cameras, so they shouldn't be relevant for booting.

Now that the short is gone, I plugged the device back into USB power and it draws a steady 0.13A, but does not turn on and I can't even access EDL mode, which is a bootloader on the SoC itself, so it doesn't rely on the NAND flash. There is also a high-pitched coil whine sound that goes for 2-3 seconds, very briefly stops, and starts again. The current doesn't change when I prompt the phone to boot with the power button (or short what I believe is the power key testpoint to ground).

From factory PCB layout around NAND region:

My board after removing components to clear the short:

Another angle of the NAND region. Yellow = 29 chip I displaced. Blue = components removed to clear short. Red = general area in which chips got bumped

How can I diagnose this issue further? Thanks