Motor Controller Replair

Been a while since I was here...If anyone is still here do they know where you could get a motor controller repaired...Mine has been a bit dickey for a while - when I put the lamp on to reconnect the Andersons - the lamp would light up but never go out...for the last times I just connected the Anderson with a bit of a spark and it would still run ok...last time after changing out a couple of dud cells I did the same and the spark was a little more lively...

The bike will ride but will not charge...new board is €600 from Vectrix Parts - they are not interested in a repair anymore but if a repair will do the job I think its better. There was certainly no huge spark and smell...I think the component failure is fairly small...

Anyway looking for some suggestions?

Thanks and enjoy your day.

Jonathan