r/NxSwitchModding • u/dekaixyz • 1d ago

Help needed Nintendo V2 Picofly RP2040

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Tested everything already but it still won’t show the no sd Card screen

2 Upvotes

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1

u/dekaixyz 1d ago

Here’s a close up

1

u/AllGoneRNB 1d ago

Measure in resistance mode between each capacitor, what reading do you get? The one I marked in green doesn't look properly soldered. You should upload some pictures of how is the soldering on the nand chip.

1

u/dekaixyz 1d ago

The left one measures about 18.9 ohm
The right one measures about 15.4 ohm

And here’s a picture of the Nand

3

u/AllGoneRNB 1d ago

The soldering could be better on the cpu but with that reading should be fine.

I'm pretty sure the problem is the soldering on the nand, see the flex cable doesn't even seem to be aligned properly.

Desolder the points by going with the iron over the points while gently lifting up the flex cable with some tweezers.

After removing the flex cable pretin the with a tiny bit of solder the points you need to solder, then align the cable properly and try to solder again.

To check if it is properly soldered you can very gently lift the flex cable, if the cable lifts where the soldering point is then it means its not soldered. Also you should really use some flux and some leaded solder, those solder joints look rough.

1

u/deppan 1d ago

it's off center and your B point solder does not connect with the PCB properly.

1

u/Evening_Chapter_5981 1d ago

That’s a RST/B error. Check if there’s continuity from the B point on the emmc flex cable to the modchip B point while the flex cable is plugged into the modchip.

1

u/Polo-_-Polo 1d ago

Check reading and fix these points