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Phonak Audeo M90-R recurring problem

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I’ve had two Phonak Audeo M-90R hearing aids for about 1.5 years. Love them! But about two months ago my left stopped working just in time for the holidays. I held the button down for 20 seconds and put it back into the charger: no improvement. The green light flashes 5 times repeatedly. Sent it in to my audiologist who was very helpful. It came back. Then the right HA went out in exactly the same way as the left one had. This time my audiologist contacted phonak and got me an entirely new pair of HAs.s two weeks ago, plus a new charging box. I got them, plugged the charger into a surge protected port on my APS UPS using the adapter and cable that came with the charger, and yesterday the left HA went out again exactly like the first two times.
I am stumped! Any ideas?

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I know this might sound stupid but have you tried just plugging it into a normal wall plug and not using the surge protector. I have had my M-90Rs about the same time as you and have never had any issues at all.

@Lorjoh said:

have you tried just plugging it into a normal wall plug and not using the surge protector.

Yes. That’s (wall plug) how it was configured the first time they failed, and I tried again after they failed the second and third time. I thought the surge protected current might be better, but no. I’m encouraged that you’re not having issues. Wish it were true for me!

Actually, the power adapter you get with the charger is to DC transformer, The output from that power supply is normally clean. If you have the battery connected to the charger, plugged in to the adapter (transformer) or not…the power is clean.
I had a similar problem startup last December with my left , returned it to my
audi, and she sent it to Denver for repair, Took 20 days, and it came back with a note
about a chip failure, they replaced chip and battery, Didn’t get it back until last week
due to covid restrictions, and the weather. I question my Audi about ti, and she said
it seems to be happening to a small percentage of Phonak M Left HA’s.

@wrharringjr said:

Phonak M Left HA’s

There are no left or right aids. That’s just software option. Each aid comes with both blue and red tags to put in it.
Yes you have left and right receivers.

If she consistently noticed that only in ‘left aids’ then maybe receiver are faulty and cause havoc all way through?

She just made the statement when I went to pick up the . My HA was sent to the DLC in Denver for repair, This particular CBOC where I had my Audio Exam, and got my HA’s from supports a rather large area, and has two Audi’s. I understand the difference between right and left HA’s is in the programming.

Well, it’s now 6/20/23 and my Phonaks crapped out again. This time it couldn’t be the power connection because I never charged them while the charger was plugged into the wall. I only charge the battery pack, disconnect it from power, then charge the hearing aids. In spite of this, the hearing aid simply stopped working while I had it in, then refused to start again. Meanwhile, my Phonak Solana microP is working as a backup despite of being 10+ years old. The reduced reliability of your new is disgusting, Phonak!

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