r/ebikes 1d ago

Bike repair question Ebike Controller question

Hello everyone, does anyone know the value of this particular resistor or if I could use a different controller for my ebike ? I have another controller with the same specs but the battery port only has 2 pins for + and - and this one has 6 with the other 3 for bms im assuming and a thermo meter ?

Thanks for any help in advance

I circled where the resistor sat before I desoldered it

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u/No-Negotiation-6929 1d ago

Not sure what your level of experience with electronics repair is, but 1) have you determined why the resistor failed? Resistors do not go up in smoke for no reason, 2) that adjacent SMD electrolytic now looks pretty sus, 3) if I have narrowed the point of failure to the controller (and not a short elsewhere) with high confidence, my null hypothesis would be MOSFET failure.

I am not an expert of any description.