SHIMANO EP8 - won't turn on (new bike)

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Shimano
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E-Bike
Robret_Mitacke
Hi everyone,

I just got delivery of a new GT AMP FORCE bike with Shimano EP8 motor, battery, and controls. It has the power button on the frame (Satelite I think its called)

I have charged the bike overnight until the amber light on the charger went off as per instructions. I pulled the battery out to double-check it's charged and it is.
When I press the POWER ON button it does only flick the green LED once or it comes on for one second and then dies off
I called a few bike shops and all booked for 3 weeks or more and do not have time for my bike. Also, the seller won't help as I took the bike away from the area.

Please if anyone has any advice would be great.

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jonkranked
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jonkranked 8/24/2021 6:14am
8/24/2021 6:14am
is there a display screen on the handlebar? (there should be). what, if any, error code is it throwing? ( https://www.shimano-steps.com/e-bikes/north-america/en/faq/troubleshoot…- ). a quick google has shown EP8 failures aren't exactly uncommon. i would try emailing shimano directly. if its new as you stated it should still be under warranty.
MOTO13
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MOTO13 8/24/2021 7:38am
8/24/2021 7:38am
Check the batteries in the display unit.
brash
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brash 8/24/2021 2:50pm
8/24/2021 2:50pm
Does the STEPS screen flash on for a nanosecond and switch off?

The symptoms you are describing is a cable short, the system will do what you mentioned.

Disconnect all cables from the display, and re-plug them in securely. If that fails check those thin cables have no freys and are all in tact, they are easily damaged.

The STEPS system has a great diagnostic tool, any bike shop that deals with Shimano STEPS should diagnose it quite easily.

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