A week ago I sniped a pair of broken ER4XRs on eBay for 80€. The seller said that one side didn't play and I was hoping that a simple cable swap would fix the issue. Sadly, it wasn't the cable's fault and instead the driver's. With my multimeter I measured 45 ohm for the working driver and 90 ohm for the broken one. If I really crank the volume, the broken side still plays but there is very little low end. I have already fixed/modded a fair amount of IEMs/headphones and so I was wondering if I could fix the issue by resoldering the connector or whether those are signs of a blown BA driver and therefore unfixable. I'm looking forward to your answers!