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A portable Bluetooth speaker manufactured by Ultimate Ears.

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UE Megaboom will not charge (light still flashing)

I haven't used the Megaboom for 6 months, took it out of storage and used it for the last couple of days while I was working outside (still had battery that lasted two days). Once it went flat, I plugged it in to charge overnight, the white light was flashing as normal. In the morning, I tried to turn it on and it said "Critical battery, please charge". While charging, if I try to turn it on, it just says "Charging, please wait". It still won't work no matter how long I leave it charging, though the white light is still flashing as normal. Is the battery toast? I did use it outside on a day with a lot of fog

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for me it was the plus buttom... thanks for the solution

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I can’t get the white light to turn on at all and all it tells me is “critical battery, please charge. I put it in the fridge last night, I have pushed the minus and plus either one at a time with the power button as well as both at the same time. Still.....”critical battery, please charge”!!! Ughhh! It’s not even a year old. HELP PLEASE! Thank you!

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Issue I'm having is I plug it in to charge an my light comes on an starts blinking likes it charging an it gives me a message about having critical low battery then after a few seconds the light goes out an it never charges. Anyone have this

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Mine too!!! I cant get it to actually charge :(

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That's what I'm dealing with now, out of the blue. It sat out in the sun for a bit this morning and I'm terrified I overheated and fried the battery

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Same problem. Red light keeps flashing and wont seem to charge.

Hold down the VOL DOWN button and the POWER button for a few seconds until you hear a sound. Then turn it back on.

All fixed! Worked a treat for me :)

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If not for this fix; I was about to embark on my own electrical mindset, that is very limited in patience! THANK YOU so much for this quick and easy FIX!

Gby

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Worked! Thanks!!

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so im trying everything......just now put it in the fridge.......not sure what that will do, however when i have tried to charge by pressing VOL up n down, sometimes it states that its critical, charge, and repeats, at another time i press same buttons and quickly it states charging, however goes quickly back to critical message.......

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Worked! Thanks. Too bad this tip is not easily accessible in the assistance and FAQ.

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My speaker did this. I was able to fix it by resetting the speaker.

Plug it in, and let it charge for a while, just to make sure it has really does have a charge (like half an hour, minimum).

Then hold down the minus button, and the power button for about twelve seconds, until you get a beep.

That's all it took for the speaker to start up correctly.

After that, I did have to forget the blue tooth device, and reconnect new. I don't know if that is part of the process.

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I never would have thought of combining those steps. Thanks so much! It's charging now!

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Worked perfectly on my ue roll. Awesome. Saved me buying new speakers!

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Omg thank you so much!!! This worked for me to!!! I am so happy right now!!!

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thank you, the addition of forgetting my UE roll helped also,

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This worked to fix my speaker! Thank you!!

I was sitting here so mad I couldn’t get it to charge, did these steps and went from 5% and won’t turn on to 46% and listening to music! :D

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I running into the same issue - even replaced the battery and still will not take a charge. I'm beginning to think Logitech sets a time bomb in all their devices so they die after a period of time so you have to buy a new one. Same thing happened to several Harmony remotes that crapped out after updates - I swore off Logitech peripherals after that. Received this Megaboom as a gift, it sounded great when it worked - will not be buying another.

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Am having the same problem. Just reset it and went to the original plug and wire and it is charging like it is supposed to. Thanks for the help

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Having same problem with megaboom. Red light keeps on flashing even after I press minus volume and power button. I get a sound but not a beep

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I had a similar problem. Through the app I did a firmware update and it worked after that.

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Took a few tries, now working perfectly. Thanks!

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Hi!

You should try using a different power adapter, one that outputs 2A to jump-start the battery before trying to replace it.

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Check the connection between the usb and cable dongle clip, they need to be CLICKED

Mine starts charging properly now.. happy day!

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Change the charger, happened to me, couldn't figure it out, and you can't just use any charger just because it fits the port, the charger maybe to weak and it will not charge know matter how long you leave it on charge, not only that, it will bugger up your weaker charger that you have used for your phone.... Needs higher output.... Try it

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What other charger. My speaker has been plugged up for 2 or 3 days. It only says, critical battery, please charge. It won't do anything.

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Same here exactly!!! So frustrating!

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I’ve done all the suggestions and the dang thing is still not charging! It won’t even say critical battery any more. It was purchased about 3 months ago and has been gently used. I am so frustrated after spending $300.00 for exactly nothing! Yuk!!

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This is happening to mine as well. It is only a few months old and not used much.

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Watched a YouTube video by Mr. Tammik.He put it in the fridge for a couple hours and hit reset( volume up and play button) and it charged!!!Tried everything else on the internet but nothing worked. This worked great. I was ready to throw it out or try and replace battery! Try it you have nothing to lose. Not sure why it works but it does. Thought the guy was nuts. Thanks Me. Tammick for the fix!!

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2 hours in fridge and plugged in my best charger, boom! It worked. Charged it 30 minutes so I could reset it, all is working now! How did putting it in fridge for 2 hours fix the charging issue?? I have no idea, but it worked!

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The fridge has nothing to do with it, I don’t know where that youtuber got his info but you literally just have to hold the 2 buttons to reset it whilst plugged in, if anything the fridge may just cool the components if they’ve ended up running too hot or something. But that’s it, if even that..

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This has happened to me with cell phones as well. If it depletes too much it won’t charge. If you plug the charger in and out quickly, sometimes it will begin to charge. I don’t know why this works, but it fixed my UE Boom and my phone multiple times. For my UE Boom I also tried turning it on while doing this. It’s working fine now.

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Thank you. I actually tried someone's else's suggestion an put it in the fridge overnight thetn I reset an it has been fine ever since. I now leave it on the charger all the time unless it's in use.

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My battery was dead, would not charge, I put in in the refrigerator for 2 hours, plugged it into my most powerful charger (Lost my original MB charger) and it worked!!!

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It is possible that you drained the battery low enough that it will no longer charge. I have seen this happen before

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For anyone else looking for an answer, Lance could be right. Unfortunately his answer came a little bit too late for me. I bought a new UE Megaboom and threw the old one in the trash. After the first couple of weeks, the same thing happened and it would no longer charge. I tried various things to get it to work, until I realised I was actually charging the speaker with the charger I use for my mobile phone etc. I switched back to the original UE fluorescent yellow/green charger and left it overnight. In the morning the speaker was working again.

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I had the same issue. I put mine in a ziplock in the fridge overnight and took it out in the morning and plugged it in and it fixed the problem and now charges no problem!

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So I tried all of the above - fridge, every button combination, a 2.5amp charger, changed cords - all the same - nothing. Then, almost by accident, I plugged the power cord into a USB on my PC instead of the power plug and noticed that the fast flashing white light changed to slow flashing. Didn’t work on the other computer but did on this one and left overnight - boom, life is good again.

Go figure!

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My issue was firmware and the fix was through their website:

https://support.ultimateears.com/en/mega...

Go to #25HOW DO I UPDATE THE SOFTWARE ON MY ULTIMATE EARS MEGABOOM 3?”

Downloaded DMG update file, plugged the speaker into USB on computer, ran the firmware update.

Hope this helps someone ;)

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I’ve also been challenged by this for the last few days. Got to the point where my GF wouldn’t let me plug in the Megaboom speaker anymore because of persistent, fast flashing light. I tried all the button combinations possible. Then I tried both fridge and freezer. Speaker would claim up to 40% charge but then die quickly unless plugged in . Didn’t feel like it was getting a ‘real’ charge. Also the charge light would flash/blink really rapidly all the time. Never the slow, pulsing charge light that my smaller UE Boom speaker shows.

Finally, using instructions from YouTube video below I disassembled the speaker this morning. I made sure to press the battery pins very firmly into the top part/charge connector. Then I plugged the speaker into the front USB ports of my desktop computer (Dell Optiplex 3020) . At last, a slow charging light. Will leave it charging for the rest of the day and then post my results later.

https://www.youtube.com/watch?v=9tTPSEa7...

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What were the results!?

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So this actually work for me, I was a little skeptical about it but I had no other choice. I actually stuff my UE Speaker into the freezer for 2hrs the original plan ended up falling asleep so it was in there for about 4-5 hrs, but I guessed it help out let it unfreeze cause buttons were frozen hahaha but after like 20 mins I plug it in with my iPad charging box and its regular charger and Wa-Lah charged full power has been working ever since. Believe it or not but it work. Hope it works for all of y'all who's having the same problem

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Critical battery. Tried simultaneous vollume down and power button. Heard the distinktive sound mentioned but no joy. Used my usb port on laptop instead of wall socket. White light on UE BOOM 2 immediately started flashing and charged overnight. Success. Thanks for the helpfull comments. Was about to consider buying a new battery.

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Same issue but appears to be charging with original cable plugged into laptop USB port …. fingers crossed

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I finally fixed mine.This is what I did I tried all the reset methods didn’t work ordered a new battery didn’t work put in the fridge still didn’t work was ready to finally call it a loss and decided to look at all the soldering on the boards they all looked good except the small one on the edge underneath the glue like material it had some white powdery stuff on it like when you leave a battery in something for too long so I grabbed a tooth pick and got it all off plugged it in and it started blinking

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+1 for cooling the unit in the fridge.

Prior to that, even using the charger and USB cable that came with my UE Megaboom, the white light would blink just twice and then no more. The battery would not charge and the unit would not power up even briefly.

After a couple of hours in the fridge - it took only a couple of attempts but eventually the battery fully charged. I played music for a while, connected the charger again and the white light blinked happily.

I figure that running the battery down too far was the cause of the original problem.

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Reuben M さん、ありがとうございました!
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