@cw_o Best of luck with the swap :)

When you do boot it up lemme know what the hardware version (42XX) shows as as I'm actually curious if there was a batch that had the alternate design.

@tiomka
https://amphenolltw.com/product-info/Ceres/Ceres.MiniSize/AU-05PMMS-LC7001.html
I think

@ikaruspint Yes, the 2n7002ps-115 are the correct mosfets.

Update: I'm pretty sure it's doomed. I'm not sure I can fix that. Let me know if you still think it's salvageable. Not really sure what would have caused it. This is what it looks like under the balance connector.
IMG_0659.jpg

@cw_o Welcome :)

If the price is okay I'd take the risk. Getting actual chips from companies like Mouser, Digikey and LCSC can be pricey once you get to the shipping screen. I've gotten chips from eBay and AliExpress (likely the same source) without many issues for things like IMUs, Mosfets and a handful of logic ICs.
Get multiple though just in case you need to redo it. No more than 5 should be fine. IMU's are fragile so you may need to try a few times.

@lia Update: It is indeed NOT fixed. After 2 half charges, the symptoms returned. I have noticed that it happens when going uphill. Going to do some testing on the BMS and see if I can track down any faulty parts.

image.jpg

@cw_o You can try NRF or DigTilt to recalibrate the imu, have the board level when recalibrating.

@lemur i wish it was that but i tested all of the main harness wires with a multimeter and everything seems to be in order. Also i tested the balance connector’s pins with a multimeter and it appears to have a short through multiple pins.

@ikaruspint It should be no problem pairing.

@aiden1983 At this point I cannot give you any good advice, just guessing.
Just be aware throwing parts at it may not be cost effective and may cause a massive short that can cause a fire, ask me how I know.
I always plug in the battery outside after a repair.
Maybe look for a working Pint controller circuit board instead. Sorry.

@compo Hi! I have the same issue. Same noise. No charging, no powering on. Dead. Have you had any luck repairing?
Only 600 miles on this Pint X. Already replaced control module 120 miles ago. So disappointing. Getting frustrated with this thing.

My onewheel plus started showing 4.2 at full charge instead of 3.6 for the lifepo on only one cell. This gave me some reassurance that the BMS is just false reporting after a certain voltage because i notice it does fine all the way till around 3.6 than cell group 1 just skyrockets to the high 4s which would most likely have exploded the battery several times over if it were true as ive only just noticed and have been charging it to 58.4v for years. Im not as skilled as you so im just gonna leave it as is, overcharge warning has only shut the board off on me one time and never while riding, only when i came to a full stop after running downhill. Thanks for the write up!

@ando also just broke c11 capacitor while pulling out massive plug

@lia
Lovely. Thanks. 👍
I have found some other ones too. Once I tackle it I'll confirm what works best.
Fingers crossed 😉

@jordan5100 -- Hi. Simple things first: My guess is you've already ruled out fender rubs or nubs under the fender; made sure the bolts holding the wheel to the rails are torqued evenly each/both sides; and checked for tyre irregularities.

Personally, not being sure of myself opening up the motor, if it was mine I'd probably trade out the whole motor for another. If you are adventuresome -- you could part the stator and hub, and you could probably find a stator (or hub) to remedy the problem. Or, once open, the source of the noise might then be clear, and a solution will work its way into your head (and hands).

Again, though, I'm more of a Onewheel rider than a technician of Onewheel insides, and to me, to minimize board down time I'd swap out motors for one kept in my reserve jumble of parts for just this kind of situation.

Others in the OWForum here are more detail oriented!

@cjbguam Not dumb at all :)

Assuming U17 on the controller side is broken then an Owie chip won't change anything sadly.

If you need someone to take a look at this Justin over at https://www.fixmypev.com/ has dealt with some of these in the past and offers repair so in the worst case he should be able to perform a repair.

@lia I totally understand! No worries about the address. I wouldn’t mind meeting up at a restaurant or coffee shop near your place, or I could even leave the board with you if that works better. Maybe we could chat somewhere privately, like Messenger or something, to sort out the details. And of course, I understand there’ll be a cost for the repair.

Let me know if that sounds good to you!