Drivo stays in resistance mode

[martinfinnemann]

Hi

I have an older Drivo, that sometimes seems to change to resistance mode by itself, and will not go into erg mode.

I have always used it in erg mode, but lately, it intermittently goes into resistance mode, so I can only change resistance by changing gears.
Sometimes it makes a "clonk" sound, and erg mode comes back.

I have tried to open it up, check everything and lube it. Haven't helped.

Have anybody experienced something similar, and have a solution?