New 3DS XL TP4056 mod for charging. Device not booting

[digital notch]

Basically, I had messed up the charging IC on mine, and used a TP4056 module to directly wire up to the battery terminal. However, last night, the device stopped working, and the battery had no voltage on it. It seemed like there’s a short circuit from my soldering(probably), so I tried to clean it up

In the end, there was still a 20 ohm resistance, which was low enough to be a short circuit I guess….
https://imgur.com/a/XhCIP5H
A pic of what I did
https://gbatemp.net/threads/new-3ds-xl-fuse.416208/page-6#post-10234832
Example of someone else doing it

[chrome finch]

you measured with the tp4056 still attached?

i measure like 3.5 megaohms across the battery terminals on mine

hmm id take off the tp4056 and the usb c board and measure the 3ds again

see if the short is still there

[digital notch]

I tried with, without, the daughter board separately, AND after desoldering the battery terminal with a hot air station

even like this, there was only a 20 ohm resistance

I could cross check after my class is over

[chrome finch]

then something on the motherboard must be shorting
the bottom of the tp4056 or the usb c thingy

but if you take everything off and its still measuring a short then idk

[digital notch]

yeah….
I have spares of the USB-C/TP4056

I even made sure I wrapped it in the Kapton tape before securing it to the board, so nothing should have shorted

[digital notch]

what’s the likelihood I damaged the layers of the PCB while hand soldering at some point?

Or the power IC is kaput

[digital notch]

yup
Still like 20 ohms or so

[digital notch]

guess I’ll just buy a new daughterboard….

man…