New controller with display for Fano-Tex FT-7009E with Bafang 36V front wheel motor?

[Tobias Claren]

Hello.

I own a Fano-Tec FT-7009E.
It has a Bafang 36V front wheel motor.
Controller G3M20211-1592-16 and the simple LED880 display.

Now, after cleaning, the motor no longer works.
There was a little water in the controller plugs.
Even after blowing it out and heating it up for a long time with a hair dryer, nothing has changed.

Now would be a good opportunity not only to buy an identical replacement (€6), but to see if there is something better available.
Of course, this should still be worthwhile for a cheap tricycle from China.

What would you recommend here?


Thank you.

 

[saneagle]

Can you show the controller label and a picture of ALL the wires and connectors spread out so that we can see what it is.

Water shouldn't damage anything unless you got in in the 5-way connector that goes to the 880 panel. Before anything, check that the motor connector is in ALL THE WAY TO THE MARKED LINE, not just in tight. 1mm short can cause non-function.

 

[Tobias Claren]

Here is the controller:


The Cables:



The thick white 5-pin plug is very firmly seated with hot glue.
It no longer worked after cleaning.
The cables were not moved at any time.
After drying, I pressed all the plugs firmly into each other.

 

[saneagle]

Here is the controller:
View attachment 64119

The Cables:
View attachment 64120
View attachment 64121

The thick white 5-pin plug is very firmly seated with hot glue.
It no longer worked after cleaning.
The cables were not moved at any time.
After drying, I pressed all the plugs firmly into each other.

Are they tide marks on the controller. Looking at those and the corrosion on the screws and plates, it looks like the bottom corner of the controller has been under water a lot and at least one time half of the whole box has been submerged. Is that right?

I can tell you now that you'll be very lucky to get a plug in replacement for that controller, even though I still can't see all the wires. You might as well get one with an LCD.

 

[Tobias Claren]

No, the controller is completely dry in the photo.
It always worked, even during and after rain.
It only stopped working after being cleaned with a damp cloth.
The controller and cables were in a plastic bag that was secured to the cable harness with a cable tie.
The plugs were damp inside.
But there was no water in the bag.

The buttons and LED display on the LED-880 are working:

Could it still be that only the LED880 is defective?

 

[Nealh]

Pretty much std generic Bafang speed controller, replace with a nice KT model with LCD for better user experience.

Test the controller, one may find a dead short/mosfet failure.

For less then £100 one will get the bike working again with a nice KT set up or one can buy a crappy speed control system for less then £50.
As the bike already has a crappy speed controller system spend the little extra and benefit from nicer rider control input.

 

[saneagle]

No, the controller is completely dry in the photo.
It always worked, even during and after rain.
It only stopped working after being cleaned with a damp cloth.
The controller and cables were in a plastic bag that was secured to the cable harness with a cable tie.
The plugs were damp inside.
But there was no water in the bag.

The buttons and LED display on the LED-880 are working:
View attachment 64126
Could it still be that only the LED880 is defective?

What's that white mark accross the bottom corner of your controller? How did it get there? There's another one higher up at a slightly different angle.

The LED display works independent from the controller. It has its own battery supply and would be fully functional even if you smashed the controller with a sledge hammer or drowned it in water.

 

[Nealh]

Moisture has been involved , it is clear as has been mentioned .
Rusty screws, and water damage marks are visible, open the controller and one will likely see the damage to the PCB.