Wrong display burned controller. Error 30h. How to fix?

[hipur]

Hello everyone

After being very dumb and trying to connect a SW102 to my controller without checking if the pinouts match, I ended up with an Error 30 on my original display (C961).

I'm assuming that the non matching pinouts on displays sent a 48v to a wire that was expecting 5v. So I went to open the controller and see what was fried, but was faced with it filled with silicon (?) for waterproofing.

Anyone ever tried opening one like that? What's the magic? I've tried pliers to remove the silicon and a pry tool to at least unglue the corners and maybe slide something out, but I'm afraid I might end up hitting something on the board and ruining it even more (for now the bike still working, I've just lost the speed reading/battery reading/can't change PAS).

If I manage to open it, the next step will be looking for a fried voltage regulator?







Thanks!

 

[docw009]

I've been thinking about buying an SW102 for my BBS02 conversion, as I'm using the old C965 display, Based on what I see in the listings, they are plug compatible. They have a male connector coming out of the display. This is opposite of all my hub controllers. If they use a round 5 pin Julet/Higo connector, those controllers use a female connector on the display.

I know they made a C961 with a female connector for hubmotor bikes. And I see a picture of a hub motor controller. Did you try to make a male-male adapter cable to join the two and fried something? I don't think a straight adapter cable works.

More likely you blew up either the RX or TX data pins in the controller, and they probably didn't use a UART in the controller, but run the data leads straight to the controller microcontroller. One of the pins in the connector does go to a voltage regulator, but it can take battery voltage.

How to fix? The controller is in default with throttle and a single PAS. I think you fix it with a new controller.

 

[hipur]

They have a male connector coming out of the display.

My original C961 uses a male Higo and this SW102 uses a female Higo.

Did you try to make a male-male adapter cable to join the two and fried something?

Correct it was so obvious, lol, should have seen it coming.

It's a PITA here in Brazil to find any source of local ebike parts. I will run with it like this and order something from AliExpress.