Canon 7D "cannot communicate with battery" error Online Repair it yourself
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- Опубликовано: 9 сен 2024
- There have been some issues with Canon 7D cameras that give a error message "cannot communicate with battery". Most people will send their cameras into a repair facility or Canon whom will in turn charge $200- $400 for the repair. This is a 10 min procedure that you can save yourself a bundle and do it yourself. If this video helped you out , show some paypal appreciation to
pelagicvisions1@hotmail.com
www.blueh2ocozu...
www.whalesharktoursmexico.com
You are why I love the internet: freedom of information. I have had my 7D for quite a while, and this problem cost me $250 just three years ago. This time, the bid was a minimum of $299 just to send to Canon for assessment. I figured it was worth a half hour to give your fix a shot - and it was exactly as you described. The little screw was out of its hole, I found it in the camera body, put it all back together and it works like a charm. One thing: two of the screws seem just a bit longer than the others - they are the ones from the sides of the body. Thank you so very much :)
Glad you fixed it. Canon makes a lot more money than I do.
it took me 20minutes to fix it.....
Dude, you are amazing! Fixed the same problem on my 7D. Fixed it in 30 minutes!. Thanks a lot!
RUclips, best school ever.
Thank YOU. My 10 year old 7D started draining batteries last month and the displayed the "Cannot Communicate with Battery" error. This video provided both the exact cause and the solution. It took me about 20 minutes to fix it.
Excellent. Glad my video helped you.
I've just sorted my Canon 7d following your instructions, the screw was missing from its proper location and was jammed down in the 'guts' of the camera, no doubt its location down there was giving me intermittent 'battery communication error' all back in its proper place now and the camera is working fine, thank you so much
I feel like a surgeon, thank you for this, saved so many of us $$$$! Trusting good vibes will be flying your way from all of us ~
My father gave me his old 7D to learn photography and this issue came up. Your video was in the first to come up when I searched it. This was the exact problem! Thank you…8 years after you made this!
awesome. Glad it helped you get your dads 7d camera working again.
Wow!!! This is why you gotta love youtube/internet. I mean I've had this problem for months, maybe over a year and I just thought it was this third party charger that I had bought. Sure enough I take the bottom off my 7D and low and behold the screw is missing. I fished it out, put it back in, and everything is hunky dory. Thanks for posting you've earned a subscriber and a like. Inspiring the DIY nation and sharing information. It's what it's all about, I'll come dive with ya one of these days.
Excellent! My 8 year old 7D developed this fault. Tried cleaning the contact and even threw a battery away thinking it was faulty. After resigning myself to the fact that it was going to be an expensive repair, I thought I would have a quick look on RUclips and see if anyone has a DIY fix. Thank you the missing screw was the fault on my 7D MkI too. Carefully recovered the screw and replaced it in the PCB, re-assembled the camera, and MAGIC it is working again. I was a bit concerned as it was wedged against the lower PCB, but fortunately it has not damaged the circuit. Canon should list this on their FAQ even if they advise to take it to a repair shop, as this seems to be a common fault! ***** Five Stars for you Blue H2o Cozumel
Thanks internet guy, fixed the problem exactly as explained, saved me a load of money and time sending it back to Canon. If you ever need a kidney or a babysitter or anything, just ask. I owe you.
Congratulations to this people. I´ve removed my 7D bottom case looking for the screw and....surprise!! It was not in his housing. Then I followed this video instructions and ....surprise again!!! The camera has recognized the battery and shows the battery charge as she did for last four years.
Thank you very much!!
Wow! Just like others have reported, I followed your instructions, found the screw, put it back where it belongs, and everything is back to normal. Thank you for taking the time and effort to post this video
I bought my camera (used) a month ago. There was a little rattling noise when I shook it, and I thought 'o crap', but the camera worked fine...for a while. Eventually, the rattle went away, but every once in a while, it would do something flakey, like suggest a fresh battery was empty...but always intermittent problems that perpetuated the application of voodoo fixes, like thinking cleaning the contacts was helping or something. Then yesterday, I got the "cannot communicate with battery" message, which, because of the wording, led me to this video. I opened the camera up (prying the plastic was nerve-racking and that tab by the battery compartment - you really need to pay attention to it) and found the screw missing just as described...but I couldn't find the screw. I read through the comments until I realized that many other people had trouble finding the screw, but you answered one of them by saying "It's in there!" and someone else said they used their magnetic screwdriver to go on a fishing expedition, and so this gave me the confidence to just keep sticking the screwdriver (carefully) into various nooks and crannies, I essentially found the screw lodged against the little motor( is the motor magnetic?) approximately where your video shows you found yours. In summary, you were exactly right and my camera works. I hope your paypal account is still active. Thank you for posting this.
Thank you so much. I met that problem when i was visiting the Beauval park! Thank to a good friend i could take beautiful pictures but that was not with my 7D! Then, I and my husband watched your contribution... and decided to operate my 7D... it was impossible to me to let my 7D to Canon company a long time... without knowing the origin of the problem and spend much money! The most important problem we met was about how to open it.. In your video, we counted 6 + 2 screws and then we studied how to remove the top... the important thing is not to brake the piece (sorry i am a french people and my english is not very good!). Be quiet, make attention! Near the system of contact with the battery, there is a "L" and a little piece not to brake... we had to push up the piece without brake anything... finally, we succeeded to put the piece out, we saw that the screw was not there.... it was as indicated, in the bottom of the 7D... we could take it with a magnetic object... and now my 7D still works.... My question now....the origin of the problem was due to the luck of screw but why. That screw served to the mass contact? or that screw in the bottom of the 7D was making bad contacts? but in that case, that could'nt be permanent, and that could do destroying things in the 7D, isn't it?
This is amazing! I just bought a 7d on ebay that had this error code, 10 minutes later i had it fixed. Thanks so much for posting this video! The little screw was stuck to the magnet on the motor way down in there, what a pain it was to get it out!
Canon wanted me to mail them my camera before they would give me a repair quote. This is such a common problem with the 7Ds, you would think they would give people a break. My sister-in-law had the same problem with her 7D. My husband and I followed along with the video just fine. However, the screw was lodged inside and wouldn't shake out. Our tiny screwdriver wasn't magnetic. So I rubbed it on a refrigerator magnet to "magnetize" it and that worked like a charm. Camera is working great! Thank you!!!!
Awesome great. Canon makes enough money....
Thank you soon much you .. I was able to take it apart and fixed it . There was the screw . It took my 25 to 30 minutes . I'll be sending you some contributions for being so honest ...I safe myself some money .. easy repair. .. God bless you for helping so many people ..
Your welcome.
I just encountered this problem (late 2024), but only when using my battery grip. I found that cleaning the 13 little pins on the top part of the grip, as well as their contact points inside the camera's battery compartment using a pencil eraser fixed it for me. Hopefully this will help someone in the future.
Edit to add: After letting the camera sit for a few hours, the "unable to communicate with batter" error returned. It occurred to me to check the CR1616 button battery which was 100% dead. Replaced that and it's back to normal (again). Don't forget to check your button batteries folks.
Thanks for the vid! Saving for later in case the problems pops back up.
Bought a new battery, put it in the freezer (temporary fix, don't do that), 4 years into this saga and BAM! there was the screw loose under the board. I used 5 minute epoxy to hold the screw in place (just a dab on the threads). Put it all back together and camera is working like new! THANK YOU!
I had a second issue even worse than "cannot communicate" the battery would drain overnight. Thanks to your video I put the screw back with loctite it works great no battery drain. Thank you so much. I was about to return the camera but I didnt want to I got such a good deal on it $100 USD.
Oh my word. Amazing, exactly the issue with mine. Brilliant walk through. After I had fixed mine, the battery in the LCD just flashed, no other display. I removed the memory battery, and all is well.
Thanks very much, worked exactly as described. Only problem I had was the screw was stuck in the camera body. Took me several (thousand) tries to get it out, but it finally succumb to gravity and persistence.
Awesome! Just bought a 7D in eBay that had the same problem. Your tutorial worked perfectly! ... and my 7D works perfectly now. A lot of thanks!
Dude, how did you ever figure this out?? Same issue with my 7D and this fixed the problem. Thanks a million!
Kris Kasprzak He probably didn’t want to have to pay. Canon for your ridiculous fee and just decided well let’s take it apart and see what’s happening in side here .. then maybe noticed the screw floating around .. or maybe he is a camera repair guy 🤔🤔🤔
I did this procedure today and it seems to have solved the problem as camera is clearly communicating with the battery now. I have to be honest, removing that bottom part of the body was pretty scary. I did not have the plastic do-hickey that the author used to pry it out, but I found something that worked almost as well. Was so afraid of cracking or breaking something! Also, I found that one of the screws was longer than the others - the one that goes under the remote control port - so you have to remember where you need to put them back in. I will show my appreciation by making a PayPal donation soon. Thank you.
Thanks a million for this guide! Worked like a charm.
thank you, thank you, thank you! i must have been searching for this solution for over a year, to the point i was ready to give up and buy a new camera. crisis averted. exactly the perfect fix for my 7D problem!
Great. Im happy my video helped you fix canons problem.
Brilliant - after testing two genuine batteries, and getting same 'can't communicate with battery' message, I - with some trepidation - followed your instructions to take apart my favorite camera. Staring inside for two minutes, I could see no wayward screw; until "There is was!" I saw it, got it out with needle nose pliers, re-installed, and all is well.
Thank you so much for your help. My 7D would only turn on for a minute and then go right off even with fully charged batteries. I tried your way of fixing it and there it was the loose screw. I reinstalled the screw. I also installed a new watch size battery and boom I was up and running again. Thank you so much for your help. And yes I will be sending you a little something on paypal right now...Thanks for saving me $$$$$$$$
Philip Chavez Thank you
I was skeptical that I'd be able to repair this myself. Hesitatingly I proceeded and indeed I found the screw inside and voila!! Sent you an appreciation token via Paypal.
Glad you fixed your 7d and didnt have to pay Canon $300+
Worked like a charm! Found another screw loose on the other side as well. Sent some happy thoughts and $$ your way!
Great you went in and fixed it yourself. Thank you very much. Appreciate it at these times.
Awesome... just saved me $250!
I found the missing screw slightly down in the camera body. Thank goodness for a magnetically charged screwdriver which found it on a "fishing" attempt.
is your camera still working after the fix or ...not?
Petru B. mine is. instantly fixed
interesting points ,if anyone else wants to discover
how repair computer
try Saankramer Electronic Magazine System (do a search on google ) ? Ive heard some pretty good things about it and my cousin got excellent success with it.
Outstanding!! My screw was stuck right next to the hole it fell out of. Back in action within 15 minutes. Managed to not break anything as well.
Great. Glad you are back together and working again.
I HAVE A WEDDING TOMORROW AND U SAVED ME! IF YOURE EVER IN NEW ZEALAND CHRISTCHURCH- LEMME KNOW COS I OWE U A BEER AND A SOLID MEAL! THANK U BRO!!!
Your welcome.
Dude, you are a genius. Thank you SO MUCH. Worked perfectly in my old 7D
Mon 7D a rencontré ce problème occasionnellement en 2012. Puis définitivement en 2014. Depuis, je lis les commentaires de cette vidéo, regarde les forums, et je me demande qui dit vrai. Hier j'ai décidé d'ouvrir le boitier, puis j'ai suivi pas à pas les instructions de la vidéo. 12 minutes à transpirer car la pièce inférieure n'est pas facile à déboiter. La vis incriminée dans la vidéo manquait aussi ici, coincée plus au fond des entrailles, je l'ai récupérée avec un tournevis aimanté. A l'issu du remontage TOUT FONCTIONNE A NOUVEAU ! Thanks John Clark !
Dommage que Canon refuse d'assumer ses responsabilités vis-à-vis de ce problème. Dommage qu'aucun vendeur ne m'ait suggéré cette solution mais plutôt incité à revendre mon boitier, d'acheter de nouvelles batteries à prix d'or, voire une réparation coûteuse.
Good video, nice and concise. It was pretty difficult to get the bottom off, and once it was off I could see that the screw was missing but couldn't find it. After banging the camera around though it eventually dropped out. The only suggestion I would add is that it seems JIS screws were used, not phillips. One of the side screws was a bear to get out using a phillips screwdriver and I believe a JIS screwdriver would have made the job much easier.
Note there is another screw opposite side of the camera also that is missing when you get this error. I was able to locate the first screw as it had attached itself to a motor magnetically as shown in this video. I was not able to locate the other screw, but put in the first screw and that was enough to fix the issue, even with one missing screw. Thank you for posting! Paypal sent!
Greatest video. It nailed my problem. However, after taking apart the front cover and the back cover, shook and tapped it for about 20 min, still could not find the lose screw. I ended up using one of the body screw (the one under the skin of the hand grip next to the len mount), and it works! Thank you so much!
+Carrot762 I found my screw further inside the body, apparently there is something magnetic down there and it was stuck to that about 1 inch in. I had to use double side tape on a dentil probe to get it out.
Bingo Boom Shakalaka! Nailed it! Just opened up my 7D to find 2 screws stuck to the motor! Thread-locked everything and put back together. Works like a charm! Thanks!
Dave Bode
Your welcome.
Hi there, I have had this battery message come up this year, just by chance it was after updating the firmware. Canon said it was probably a PCB issue, so with the COVID-19 lock down we face I googled and tried your solution. Easy to do, and it worked first time - screw was magnetically held by the motor. Refitted and EOS7D is fully functioning again. Very many thanks for your video.
Your video is a blessing, I brought my camera back to life. Thank you so much !!!! :-)
Thanks, great instructions. I am thinking of sending Canon a bill for the repair! I had already replaced the CR1616 and it seemed to be working fine but decided to open the camera and see if it was the screw that caused the battery communication error in the first place, and sure enough it was. Thanks again.
Francis Fiolek
hahahahaha, yes send them a repair bill. its their problem
Perfect video.Exactly the problem with the camera my daughter gave me. Fixed in about 20 minutes. Many thanks.
Wow - das war der Fehler! Vielen Dank diese Erklärung! Danke Danke!
Wow, thanks for that walk through, what a life saver. This was bugging me for a while and came across this repair you guided. It was a little daunting getting the bottom cover off. Once open it tool a little while to locate the screw that had found it's way up inside the camera - I think coaxed there by I assume the magnetic attraction of the shutter motor... It took a bit of careful persuasion to get it out with a magnetized screwdriver but pretty much plain sailing from there. So relieved and indeed indebted to you, many thanks.
Glad you fixed it. I tried to show that anyone could do this repair and no need to send to canon.
Thanks.. worked like a charm.. took me 20 min.
Good job Big H. Glad your camera is working for you.
This was amazingly helpful, I removed the bottom, found the screw, put everything back on and my camera is detecting the battery again! thank you so much!
Thanks so much for this! Fixed my 7D!!
Awesome. Glad to hear.
Oh my god, i can´t believe but my camera is working now :-) THANK YOU FOR THIS BIG HELP. I opened the camera and really the screw was missing. The problem i couldn´t find it inside the camera. I replaced it with another similar screw, but the camera was not working. I opened the camera another time and after nearly half an hour in found the missing screw very deep inside the camera. i needed nearly one hour to get it out, but finally i got it. i removed the other one and replaced it with the original one i found inside the camera .... AND IT WORKS!!! This was so important for me, because now i can use Magic Lantern with the 7D again. THAAANKS!
Excellent fix thank you! Took me 15 minutes total and camera was back to perfect function after. Can't believe Canon hasn't taken care of this and instead are taking advantage of their customers by charging them time and big money to find a small screw and place it back where it started. Shame on them.
I just wanted to say thank you Blue Water. Cozumel for creating this repair video . I was able to pull it off without destroying anything . However there was a screw missing on the opposite side of the board that I couldnt find and decided not to open the whole machine up for. Im not sure how that might have impacted the device , but thank you very much for helping with this particular issue. You are much appreciated !!
Thank you very much just about to take to expensive repair saw your video fixed in 30 minutes . Very kind of you to share
Thank you so much for sharing this simple fix with us. It worked on my camera. Got mine secondhand, and I only have batterier that are not original Canon. Thought is was the batteries, when i found your video. Openning the camera following your clear instructions, I found the missing screw. After reinstalling the screw and reassemble the camera, it just works. Now I hope this solves the battery drain problem as well.
Just fixed my own camera, had the same issue, was worried about opening the camera, but everything worked out perfectly. Thanks for the video, really appreciate it.
THANK YOU! Great job! I followed the instructions and it went just fine! Thank you!!!
Absolutely perfect. I found the screw just as in the video. Buttoned back up and running.
I didn't find the screw, but it was loose. Worked perfectly now, thanks man!
You should add "Error 30 Repair" in the title as i solved my 7D Error 30 issue and inconsitent battery recognition with your tutorial. Thanks a lot !
This was a huge help! I've been cleaning battery contacts constantly thinking that would solve it. Your video was very clear and helpful. Thank you!
Glad to hear your and Canon's problem is solved. Enjoy that 7D now.
I'm facing the same issue with my Canon sl2? What should I do ? Is that screw at the same place inside as in this camera?? HELP
Thank you so much, wish I had been on your youtube whilst on holiday in Tenerife.Little screw found and reinstalled...
Cheers, Andy
Thank you so much, really, you made my day, even my week ! You deserved a medal for your video !
Cheers form France ! ;)
Thank You so much!!!!! I've been having the battery issue for so long. I also tried the popular freeze fix with no remedy. Till I found this video. You Save me!!!! I follow every step. When I opened the plate I noticed the screw had loosed inside the camera. After closing it the problem and message kept persisting. I opened it again and realized there was a second screw missing in the other end. That one screw was stuck on this small magnetic cylinder. I screwed it back in and then closed the camera properly as suggested in this video. DONE! Problem SOLVED!!!!! Thank you so much for this Christmas Present!!!! DEC. 24, 2014
Thanks so much. This tutorial is easy to follow. But most of all, you have taken away my headache when my 7D gave me that “battery communication” error.
Got it “repaired” in under 10 minutes! (Y)
Thank you so much!! You just saved me soo much money!!!! Thank you from the bottom of my heart. A real life saver
Your welcome. Glad you got your 7d running again
Super thanks a lot...today Dec 2 2014 at 3:27pm Central Time just fixed my "Cannot communicate with battery" error in my 7D. I actually did this..and when I opened the bottom of the camera I found the same screw shown in this video loosen. Had my magnetized screwdriver ready and pulled it out. Put it back together and problem gone as soon as I connected everything together. Thanks a lot. It works and it really is the screw the problem.!!
Your welcome, and Canon or some camera repair shop will charge you atleast $200 to repair plus shipping.
Antonio Guillen
Great. Glad it helped another Canon customer. Maybe canon can send me a t shirt or beer coozie or something....
Fantastic thanks a lot !!! I had the same issue and watching your video I managed to fix it! exactly what you showed. Perfect thanks again.
Thank you so much for this!!! This problem was driving me crazy and it was an easy fix with your video. Much appreciated!
Your welcome
THIS JUST WORKS !!! Not for the clumsy handed tech, but with a good jeweler's phillips screwdriver and some patience, very easy. I recommend the Husky HD-74502V driver avail at Home Depot for ~ $6.00. My best small item repair tool. Put a towel down so you don't lose any of the screws. Lay the screws out in the order you remove them. Don't remove that silly rubber cover next to the battery compartment. Thanks for the video. Shame on Canon for not 1. Quality control failure at the factory. 2. Not recalling the body for repairs. 3. Lying about the repair and charging the consumer to fix item 1.
James Harrison
I agree James. Sucks for people stuck out in the middle of nowhwere and their camera fails. Its a canon fault
Perfect video to show that tiny problem occring that problem.
In my case the screw was still in place. But it seems that I was able to tighten it a little bit more than it was.
After screwing the camera together it worked perfectly !!
I'll send you a small amount to your PayPal of course.
With your instructions I have repaired it Thanks from Spain
Que espectaculo, funcionou mesmo, muito, muito obrigado, era mesmo apenas o parafuso solto
Muy bien.
Rapaz, hoje mesmo peguei a minha 7D qui na TECNOFOTO em Brasilia. E havia falado pra eles que poderia ter sido esse parafuso.. Nem abriram a camera e me deram um orçamento de 980 reais e para entregar com 30 dias. Cheguei em casa, fiz esse procedimento e deu certo. Show demais
All works! You're God! Thank you! Everything was exactly as in your video!
Glad you fixed your 7d. Still a good camera. Your comment is gonna go to my head now. hahahaha🤣
Thank you! I have been having this problem on and off for a year now. Almost did a firmware update but found your video. Love this camera and was hoping I wouldn't have to send it in to be fixed!
Fixed! Took a couple of taps against the table before the screw dislodged from where ever it was hiding, couldn't see it at all when I took everything apart. Everything is working great now. BTW, we dive Coz quite often, love the island and the people! Check your PayPal acct!
Thank you very much! I had the exact same issue on my 5 year old EOS 7d back last summer in the midst of my Canada holiday. ;-) I always assumed that some contacts were dirty and needed cleaning. Today I saw your video and gave it a try - bingo! The screw was even at exactly the same position... :-D You made my day. Thank you and all the best!
Awesome content, everything worked perfectly except for the fact that I found two identical screws in that hole, and don't know were the other one belongs too lol.
looking at another video I saw there should be another screw on the opposite part where you place the missing screw. I don't know if the lack of this screw causes any malfunction though.
Wow. Such a simple fix! Fixed My Wifes 7D, We are both very greatfull. Thanks
IT WORKS, I JUST FIXED IT. THANKS A LOT.
Thanks for the video. Had this problem for a while and was way to expensive to send in for a fix. Simple and easy to do. Just had to give the camera a little shake and the screw fell right out. put it back in and was good to go.
Thank you soooo much for this video. I can now after 2 month use my camera. I first bought a totally new canon battery, but he same fault came up. I found your video on youtube, I did as you descibed, found the little screw in the camera and put it back, and vupti, my camera works again ;-)
Great video. Solved the problem after finding the screw in depths of the camera.
Congratulations for the video , will be of great value for the User canon .
I'm in the queue to thank you. simple instructions, video was clear.
Thank you for the vid tutor. Wish I found this a lot earlier. 100% diagnosed and remedied.
Many thanks for your video, I followed you suggestions and finally fixed my 7D.
Thank you so so much! Even I, a girl with 0 experience in fixing things or using tools, managed to do that and my camera is fixed. I'm super happy, it was bothering me for a long time! (:
followed step by step and your were right!
Loose screw back in and camera works.
Thanks so much for sharing!
Great, thank you very much for sharing this information.
I was presented with this same problem in my 7D and decided to have it, surprise, the screw was missing, I put it in its place and solved the problem.
My greetings and thanks from Argentina.
I know this vid goes back to 2014 but if you're still listening, I tried your fix. I found the screw in question was intact! Not fallen out or even loose. But while the bottom plate was put back on, but not screwed in, I tested the fix and it was fine. Battery showed up like it should. Then I put the screws back in and wham - it showed "cannot communicate" again. What else have you got for a fix since 2014? (Thanks for the video - it helped me dis and reassemble the camera)👍
Thank you very, very, very much! Same thing happened to my 7D, your video helped me in fixing the issue!!
Glad it helped!
Thanks ! just fixed mine !
You are a life saver!! Thanks dude, i thought i had to buy an new one.
Problem solved, many thanks!
Great turorial. Followed it. Screw was gone. Found and replaced. Didn't remove the Error 40 for me though :( So keep that in mind going into this. It may not fix it.
Just completed the repair...thanks! It was exactly as you displayed!
Thank you so much for this video!! You definitely saved my account on this one.
Your welcome. Glad to have helped.
Absolute hero. You saved my camera. Thank you so, so much!
THANK YOU! Another happy viewer!
Getting the screw out was a pain as it was stuck on the magnetic motor inside the camera body.
Had to resolve to bumping the camera "a bit" ( less than 100 times ) against the floor. Hard, HArDer. HARDER!, so I might have broken something else in there by now :)
Time will show.
When the screw finally made it out, I didn't notice and actually hit it into the floor so the head was the only visible part of it. Had to unscrew it from the flooring.
So, AF still works, and not to many spare parts left after the procedure :)
Cheers!
Thanks for your comment. I almost gave up on trying to find the missing screw inside my camera, but after reading these comments decided to just hit it a bit more against the table. And sure enough, finally it came out and now my camera works.
@@joonasvanninen2689 😂😂😂, violence! 😁😁👍!!
Hello I am from México and your video solved my problem! Thank you so much :)
Thanks. Opened up the camera as you suggested, screw had fallen out and was lodged up beside that cylinder. Easily recovered then rescrewed and battery indicator now working. I have had issues with an intermittent mirror lock up, so will carefully observe to see if that issue has likewise been sorted.