Grin tech controller repair in Europe

[NHM]

Looking for a repair shop in Europe that can fix my Grin tech controller.
Most likely blown mosfets.
Anyone know who can do this?

 

[liamcaff]

Am also looking for a controller repair job (Lyen 12FET) in Europe

 

[upek]

There are three typical damages:

- blown FEts - shorted phase wires or too much load - easy repair
- damaged 5V supply - shorted signal/hall wires - fairly easy repair
- damaged logical circuits inside - usually water damage, especially when you ride on salty roads in winter - difficult to diagnose and repair

When you suspecting water damage it might be not worth sending it to repair, if not is probably wort time and effort.

 

[liamcaff]

I checked the MOSFETS using this technique: https://www.ebikes.ca/documents/BlownMosfets.pdf - all seems perfectly fine there.
The 5V supply is fine too - checked with the Lyen ebike tester kit.
The problem I have could be a damaged logical circuit but there's definitely no water damage. My issue started immediately after accelerating up a hill on a dry day. I've opened up the controller but no visible issues... Might try to send the controller to Lyen for him to have a look at it.

There are three typical damages:

- blown FEts - shorted phase wires or too much load - easy repair
- damaged 5V supply - shorted signal/hall wires - fairly easy repair
- damaged logical circuits inside - usually water damage, especially when you ride on salty roads in winter - difficult to diagnose and repair

When you suspecting water damage it might be not worth sending it to repair, if not is probably wort time and effort.

 

[NHM]

Upek. Do you do repairs of controllers?
Im pretty sures its blown mosFets

 

[upek]

@liamcaff
That will probably be best solution.

@NHM
Maybe you check them using technique posted by liamcaff - it's pretty easy and you need only basic multimeter and 5 minutes.