On Saturday, October 28, 2017 at 1:51:17 PM UTC+1, John Rumm wrote:


Gentle application of heat can often work - many assembly line glues are
types of hot glue (hand because there is no curing time - once its
cooled off its set). Some modern phones / laptops etc are very fond if it!

I'm assuming they are removable or else how would the
manufacturer replace them under warranty?

They would just replace the whole unit.



I hadn't thought of applying heat and you may be right but as I really want to keep the driver in one piece I think the glue on the drivers would also be affected, no doubt to their detriment. As I mentioned above I tried IPA and it does soften the glue slightly but the gap between driver and surround plastic is so narrow there's no way to remove the glue even if softened.

And having now removed a driver from another faulty unit by drilling and grinding the surround lip away with a 1mm drill bit (because I don't have a Dremel which would have made life easier), I realise these units are definitely not made to be repaired, only replaced as you say! But at least now I have a way to remove the drivers and can proceed with the repair.

I'd be willing to bet though that someone who really knows their plastics and glues would be able to come up with a suitable solvent.