Sensors full of Bubbles, Plastic peels off.
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@AntoniusGaius @AntoniusGaius OK folks, so as I promised I made some comparison of HR accuracy of my new sensor on 9Peak Pro and Ambit 3 Peak with Suunto Smart sensor. It is on 10K run. In last third is visible that the values are almost identical. It was after some adjustment of the watch strap on my wrist. After this I stopped control both watch and only run nicely
. Before this are some differences visible but nothing terrible. Mostly in the moments I manipulated with my sleeve to look on the watch to compare values with second ones (it was -1 degree C) So in general I must say that measurement seems to be really accurate at the moment. Very tiny bubbles are present but it is actually not spreading and it is not in reading zone so it does not affect the accuracy. Iām satisfied with this results and it is for my purposes sufficient enough. I will probably use the strap only for run trainings to better control the HR zones and have better understanding what my old body does during it 
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Hello all,
Thanks for all these updates. As I can see reading all the last messages, even the ārepairedā watches start to ābubbleā again in numerous cases.
My watch is also affected by these bubbles (see first messages). For NOW it does not affect the HR sensors. So my position would be to wait that Suunto finally manage to find a more robust material for the back case of their watches. I have still more than 1,5 year of warranty running, so I can afford to wait a little bit. The only thing that would change my position is if the bubbles start to impair the HR areaā¦ (and in case, I have an āoldā S5P for the repair time if needed).
Cheers
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@vincent-mayousse said in Sensors full of Bubbles, Plastic peels off.:
So my position would be to wait that Suunto finally manage to find a more robust material
mine after replacement (4 months a go) works like a charm, so I would suggest to no wait any longer you canāt be sure you have no real problems
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@westie said in Sensors full of Bubbles, Plastic peels off.:
@vincent-mayousse said in Sensors full of Bubbles, Plastic peels off.:
So my position would be to wait that Suunto finally manage to find a more robust material
mine after replacement (4 months a go) works like a charm, so I would suggest to no wait any longer you canāt be sure you have no real problems
Did they change the whole back case? Does your watch have a new serial number? If so, what is-it (at least the first 4 numbers) ?
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Just one thought. Many people here discuss about the warranty and what will happen if the bubbles reoccur after the end of the warranty period.
Remember Spartan Trainer? Some batches had an obvious construction problem due to which the plastic watch case broke and the strap got detached.
Suunto (at least internally) acknowledged the issue and if you read the warranty conditions, you can still find there āWe have extended the 24-month warranty for the Suunto Spartan Trainer if the strap is detached from the case.ā (https://www.suunto.com/Support/Warranty-information/Sports-Watches-Dive-Computers-and-Precision-instruments/)For me, this brings hope for solution even after the end of warranty period in case of obvious construction flawā¦
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@vincent-mayousse yep, yep, 2311.
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@westie youāre a lucky dude, my watch was repaired in August (so, 3 months give or take) and is already bubbling like crazy
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Same issue. And sent it to the dealer (in Shenzhen China, not to Finland). They said they will not fix this and replaced a new watch for me.
This is the old bubbling watch. Just bought it in October without any dangerous usage.
Just received the new watch yesterday. It seems with no bubbles. Hope this will not fail.
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After about half month later, it starts to bubbling again.
And as they said they just replaced a new watch (They donāt fix them), I think it will happen again if I send this to them. Maybe they donāt have the recently produced watch (In China here which I donāt know).
I have to leave it alone. Hope it will not affect a lot. -
@alfredzhong Ouch, bad luck! If I were you I would send it back again, why stay with a defective unit as long as it is covered under warranty?
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@robis Iāve contact the customer service and sent the pictures. They said they will tell the engineer and give me a solution.
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IMG_4369.jpeg -
@alfredzhong it happened a friend of mine too, now seems ok after several months. Anyway considering itās a known problem I guess Suunto would replace it even if out of warranty
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ęŖå±2023-12-25 14.01.02.pngThe customer service replied to me.
Translation: The engineers said that thereās really a batch of watches which had problems with the coating of the OHR sensor. Now we will order a batch of backshells from the Finland. It will take 2~3 months. We will contact you for replacing it when the goods arrives. After that it will not happen again.Luckily thereās a solution.
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@alfredzhong glad to read that!!
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Hi,
My second (replacement) sensor is developing small bubbles all over the surface.
I had to send my watch to Suunto in August because it failed completely (wouldnāt turn on) and also had bubbles in a very small area. Suunto replaced the sensor and backplate. 3 months later, the bubbles are back (many more of them) but the watch is still working.
Has anyone kept using their watch for a long time with the bubbles present? Did it eventually cause the watch to fail (like mine the first time)?
Iām asking because Iām supposed to be using the watch as my primary navigation device in a multiday race starting on 14th January. So I donāt have time to send it to Suunto (took 4 weeks last time). But I donāt want to find my watch has failed in the middle of a winter night on a remote hillside.
Thank you! -
@MKPotts what if you carried a cheststrap/armband with you in the meantime (if HR matters, of course otherwise I would move on without concern)?
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@MKPotts One of my S9PP models (an early test model) has no plastic coating on the HR sensor. It is working just fine and should not affect the watch except for HR detection. I would use a belt if you want HR for your race.
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Thanks for sharing, that an information directly provided by Suunto (I mean they āacknowledgedā the issueā¦)
I am pretty sure that my watch elements came from Finland. And I had bubbles tooā¦
By the way it is getting bigger and bigger, and even if it was not the case at the onset of the ābubblingā (see my previous post), I now have the impression that it impairs the HR measurement (some aberrent values during some runs). -
Thanks everyone for the feedback.
Iām not interested in HR for this race and would turn off the sensor anyway. My concern was that the watch would fail completely, either while running or when charging it at an aid station (given thatās how it failed the first time). But from your feedback I probably donāt need to worry about that. So Iāll take my S9B as a spare in my drop bag rather than carry it.
Hopefully Suunto have identified the problem with the sensor coating now, so when I send it back after the race for repair, itāll be the last time.
