Picked up my new pair of CostCo KS9 hearing aids on Nov 1.
This morning when I replaced the dead battery for the left one, the hearing aid still did not work. So for the first time, I used the Disk and changed that filter. I probably should have put on a new dome? But I used the old one. Hearing aid works fine.
My question is, what does this disk do? Does it clean the filter so we reuse it again as we keep rotating through? I was never told anything about buying a new disk, no idea of the cost either. This just never came up.
You’re ignoring this member’s posts.