T i m wrote:

Anyone succeeded in doing anything like this?

Yes. ;-)

Depending on loads of variables you may be able to scrape some of the
insulation off the 'track' a bit away from the suspected break and
solder a fine wire to it (might not be pretty but can work, paint and
tape over it when finished / tested).

Thanks Tim, I saw that on a google search, good to know it might work in
the real world

I'll have to find out if they will sell the replacement part on a return
basis (or if I can buy it online). As the repair will take out the f/f
if it doesn't work...