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Thanks for in diagram and info. I believe this is a bad controller and will see if Ecotric will send one as one of the dead bikes is still under warranty. I'd like to test with a new controller but will upgrade the controller and go with an LCD to get better slow speed PAS control on my wife's...

I measured impedance between the three large wires (blue, yellow, green) at the connectors between the motor and the controller. Measuring the motor side my meter reads .3 ohm. Checking back to the controller the resistance reads infinite. With the controller and motor connected, I read 0V...

Same experience here. First one did not work out of the box but Ecotric was pretty quick to send replacement rear wheel/hub. We have two but have yet (after more than a year) to have both work so we can ride together on a camping trip. Trying to decide if we should scrap them and find...

Can you share your findings? I would be interested to know what you found. Having issues with Dolphin myself.

We have two Ecotric folders. My wife's has quit working and mine has intermittent failures. Symptoms are the same. That darn LED controller lights normally but PAS does not work, throttle give a quick jerk then nothing, and the walk assist does same. To have issues with both makes me wonder...

Have you tried contacting the seller? I received one of their folders a couple weeks ago that had an issue. I have "never" received better customer service from anybody than I received for Ecotric. I preferred to troubleshoot and repair rather than return. I told them what I had done to...