SPECIALIZED SL battery short circuit - any ideas?

[czyznik]

Hello everyone, I have a problem regarding the 13s2p battery for the SPECIALIZED VADO SL (SBC-B15) bicycle. I accidentally shorted the battery pins. I checked the cells, the voltages of each one are OK, the entire package is 53V, but the TCU does not see the batteries (the e-bike cannot be turned on, the diodes do not light up). Can anyone advise what to check, whether the BMS is blocked, what diagnostic steps to take? Indicates a link to the battery specifications: SL Batteries
I'm attaching some photos of MoBo.

 

[cream]

Hello,

I would first check the SCF fuse and power mosfets. But if you disconnected the upper board, it's possible you triggered a protection in BMS firmware.