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It's a Santroll controller, which is OEM only. All controllers will work with your motor. The LED control panels are extremely reliable and robust, and yours is in good condition, so I doubt that there's anything wrong with it. The same goes for the controller unless you abused it in some way...

You connect the good controller to the battery, LCD, and throttle, then to either motor. Switch it on and check that you have 5v on any of the thin red wires to the motor, throttle or pedal sensor connector - nothing else. That will confirm that it's switched on and ready to work. Operate the...

What do you mean by stopped working?

Why do you want to change them?

The track circled in red is the negative and the other is the positive. We can now conclude that all three MOSFETs that switch on the positive are open circuit and therefore defective, so that controller needs replacing. The other one should work if you connect it to the motor, battery and...

Puncture repair kit £3.24 fixes 48 punctures = £0.0675 per puncture. Plus, you don't have to take the wheel off to patch a puncture...

Is that with the red probe on the track next to the MOSFETs?

No, it depends on the MOSFETs. I've seen them as low as 3K. Anything from 3K to 24k can be expected. The more the results deviate from that range, the more you should be suspicious of failure, but the most important thing is that the three should all be the same. If one were 3k and the other two...

Mine was OK until I stopped. It's all I had for my daily school run from 11 years old. Looking at that one in the photo, it's using a single wire with the frame as the ground. It's grounded through that rusty screw in the bracket that presumably has a point that digs through the paint. I can...

Until it doesn't. You could just as easily argue that seatbelts in cars are unnecessary because you drive without one and have never been thrown through the windscreen, or you don't need a fuse on your lights powered by the main battery because the wires have never shorted.

9.24 Megaohms is not a value I'd expect. It's a very high resistance. MOSFETs don't normally go like that. It points more to a break between the battery wire connector and the track that goes to the MOSFETs. If it showed 0.L, it would be more believable. If your fingers touch the probes when...

Kt LCD can be password protected. If you forget your password, though, you're out because you need it to reset.

A 20Ah HL type battery will hold fine with one screw if you keep your bike parked in your shed.

You test MOSFETs the way I explained above by measuring the resistance between the motor wires and the battery wires. Forget all that stuff the "experts" show you on Youtube. It's unnecessary and too complicated. As I sit here now, the results of your tests are unclear. Please do the test...

The black groove is there to tell you when to replace the rim. When parts of the groove disappear because the bits either side are worn away, it's time to replace the rim. Yours looks Ok at the moment, though it is obviously wearing, so keep an eye on it. The bit you pulled out is just a bit...

In the 10 years I've been on this forum, nobody ever reported that a storm killed their ebike charger. Ebike chargers have inductors and transformers in them, so have their own surge protection.

I don't think they did that at all. They just looked in the plug and saw that the fuse wasn't right. The rest of what they said was probably just conjecture based on the unused fuse not being right.

All motors work the same, so you should be able to use any one you want, except that you sometimes need to change the speed sensor setting in the LCD and occasionally, you have to figure out the correct wire sequence. if you fit a different motor, you need to build it into the rim or buy one...

Once we established whether thr MOSFETs are OK, the plan was to check out everything else. If neither motor was working, there must be other problems, so new controllers might not solve it. Generally, you have to do some wiring when you fit new controllers, but if you buy replacements...

Starmer will be gone shortly when the shocking story comes out about Southport.