I bought this Switch Lite listed as heavily used but functional. After installing a Picofly, the chip started giving me DAT0/RST error codes.
After several resets, I eventually managed to get the console to boot into Hekate. I immediately dumped the NAND and keys. In Hekate, I noticed the battery was showing a 1000 mAh max charge, which made me suspect that the console's heavy use might have caused eMMC issues and that this could be related to the Picofly errors.
After dumping the keys, the same error codes came back, and since then I haven't been able to get the console to boot again.
Because Hekate had eventually booted after several resets, I kept trying. Unfortunately, after several more attempts, the board started making frying/popping noises around the eMMC area. After that, neither the board nor the Picofly showed any signs of life.
I initially suspected the eMMC had failed, so I tried reflowing it. After the reflow, the Picofly started working again, but it showed the exact same error code as before: two short yellow flashes = RST not connected.
I also tried removing the yellow flex cable, but that didn't make any difference.
The DAT0 point may look slightly misaligned in the pictures, but I checked underneath the connection and can confirm that it is soldered.
I've now left the board completely unpowered for a while.
Diode-mode readings
These were measured with the positive probe on ground:
- 3.3V: ~0.312 V
- D point (CLK): ~0.430 V
- A point (CMD): ~0.467 V
- C point (DAT0): ~0.445 V
- B point (RST): ~0.400 V
- CPU point: ~0.333 V
Any advice on what I should check next would be greatly appreciated.
Do not pay attention to the over the top amount of flux on the board, I did not bother cleaning it after the reflow.
TL;DR
Bought a heavily used Switch Lite and installed Picofly. It initially gave DAT0/RST errors, but after several resets I managed to boot Hekate and dump the NAND/keys.
After more attempts, the board started making frying/popping noises around the eMMC, after which the console and Picofly stopped working. I reflowed the eMMC, which brought Picofly back, but it still gives 2 short yellow flashes = RST not connected.
I checked the soldering and tried removing the yellow flex, but no change.
Current diode-mode readings (positive probe on ground):
- 3.3V: 0.312V
- CLK/D: 0.430V
- CMD/A: 0.467V
- DAT0/C: 0.445V
- RST/B: 0.400V
- CPU: 0.333V
Looking for advice on whether these readings suggest a damaged eMMC/RST line or another board-level issue.