Sena 50s powering off by it self after turning on
So today when I was ready to ride, I put my helmet on and turn on my Sena 50s, after 3 seconds it just says "goodbye". At first I thought it was a battery issue since my last sena 50r was having a battery issue where it will not charge, but after charging the 50s for an hour and trying to turn it on it would turn off 3 seconds after, I was able to connect it to my phone really quick and see that the battery was full, so it's not the battery problem. I connected to the computer and show that I have the latest firmware. After messing around with it for half an hour I figured out that if I turn it on and keep holding the "phone" button for like 10 seconds it will stay on like normal. This is really frustrating since it didn't have this problem before, I just wondering if this is a software issue.
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Mine just started doing this today. Your fix works. Sena, can you have a look at this? 50S-10 running firmware 2.1
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What do you mean by “phone button”? Having same issue.
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I am same here. When I turn on Sena 50s , there will connect to Phone just 1~3 second , then it would turn off by itself. And I found that battary life is unstable !!! It may show different % when I finish chage. So I think that problem is quick charge damaged the device . haha but I bought it by other country , My country can't provide insurance ... Hope there can launch some premium product.
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By the way, push the power on bottom then keep "P" 10 sec , it work! but it seem mesh function would broken.
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Same problem where is the button on the phone?
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Same is happening to me. Was a solution ever found? Factory reset had no effect.
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Same issue on mine. The fix works but it is annoying. What is Sena going to do about this issue. My unit has less than 20 hrs of use. I do not have original packaging to return it for an exchange.
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Mine has done the same thing since the day I bought it. Verified that I have the latest firmware, made sure the batter is fully charged, and tried hard resetting (pin hole button). I have a 20 s on another helmet and it has never failed me.
Really disappointed in the 50S0 -
Mine is doing the same thing, starting on my last ride. Continuing to hold the Phone button when powering on for a bit (at least 10s) did work to keep it on. At least it's usable again. This happened right after it was charged with a higher power Anker USBC charger, but everything should be USBC compliant so that shouldn't matter. I have charged it with that charger before. I will say my Sena 30k died after I charged it one day with an unknown charger, that might have been high power, but that is not USB C and so doesn't have the same leeway for charging profiles as USBC should. Not saying Sena didn't get it wrong in some way.
When i called Sena the nice support person said to try plugging it in, doing a pin reset, and letting it charge fully (which it already was). I did that, let it charge overnight. Didn't fix it. Holding the Phone button is a workaround.
Anyone find a fix?
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Mine has started to do the same, it was fine one day and the next it started doing this, I have raised a ticket but yet to be resolved. Has anyone had theirs fixed or know of a work around?
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Was this ever resolved?
I bought the 50B module for my HJC helmet in April 2025 and after day 3 and the 3rd overnight charge this started.
The charging LED is not lit up either any more.0
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