Resound Quattro microphone dead

I have a resound Quattro rechargeable that the microphone is dead completely and makes static noises but beeps, Bluetooth, and 2.4 ghz works. I suspect it was losing it performance but I could not tell any different until it was completely dead. ( my CI side took over slowly until it became completely dead)

Has this happen with you guys?

It has happened to me at least twice and perhaps three times in the past couple of years. MFI from the streamer works great, but input from the microphone is totally inoperative. c!