Hello all. Recently I bought two dead 3ds LL consoles (japan region) from eBay. One of them was quickly repaired just by swapping parts, but the other isn't so easy.
One of this console's motherboards isn't turning on. All it does is charging battery (orange light glows) and when power button is pressed blue light starts to glow. I can power it off if I press power key for 15 or so seconds, but thats it. It consumes (as I remeber) 0.04 or 0.07 mA of power, it doesn't click and turn off by itself when screens or their backlight are disconnected (working console does this), it doesn't turn off by itself even when i power up motherboard only, with nothing (except battery board) attached to it.
Motherboard doesn't look physically damaged, there are no traces of liquid spillage or corrosion on it, everything looks normal. My guess was its an issue with software.
I tried to recover it using hardware method from the guide ( https://3ds.hacks.guide/installing-boot9strap-(hardmod) ) - it doesn't boot (nothing changed, really: only blue light, doesn't turn off, power consumption was still the same). Tried to flash nand backup from my second 3ds LL (which, I repeat, is working) - still same, so I flashed original, unmodified backup back. I physically desoldered EMMC chip and tested it on hardware programmer (z3x easy jtag plus) - chip works ok, no errors, everything reads and writes as it should, so I soldered EMMC back in its place.
Is this a software issue? will getting ntrboot flashcard fix my problem or is this a hardware issue? I can solder well (I can reball CPU if there'll be a need for it), but I don't know how to diagnose this console. If someone with experience in repairing this types of bricks can help me I will be very grateful.
P.S: While I was swapping parts between consoles I checked most of the parts: both screen on both console are working, both boards with battery connector are working, batteries are working, sd readers are working, other parts I didn't tested.
One of this console's motherboards isn't turning on. All it does is charging battery (orange light glows) and when power button is pressed blue light starts to glow. I can power it off if I press power key for 15 or so seconds, but thats it. It consumes (as I remeber) 0.04 or 0.07 mA of power, it doesn't click and turn off by itself when screens or their backlight are disconnected (working console does this), it doesn't turn off by itself even when i power up motherboard only, with nothing (except battery board) attached to it.
Motherboard doesn't look physically damaged, there are no traces of liquid spillage or corrosion on it, everything looks normal. My guess was its an issue with software.
I tried to recover it using hardware method from the guide ( https://3ds.hacks.guide/installing-boot9strap-(hardmod) ) - it doesn't boot (nothing changed, really: only blue light, doesn't turn off, power consumption was still the same). Tried to flash nand backup from my second 3ds LL (which, I repeat, is working) - still same, so I flashed original, unmodified backup back. I physically desoldered EMMC chip and tested it on hardware programmer (z3x easy jtag plus) - chip works ok, no errors, everything reads and writes as it should, so I soldered EMMC back in its place.
Is this a software issue? will getting ntrboot flashcard fix my problem or is this a hardware issue? I can solder well (I can reball CPU if there'll be a need for it), but I don't know how to diagnose this console. If someone with experience in repairing this types of bricks can help me I will be very grateful.
P.S: While I was swapping parts between consoles I checked most of the parts: both screen on both console are working, both boards with battery connector are working, batteries are working, sd readers are working, other parts I didn't tested.