Who killed my G9?
Do you have a Canon G9 died suddenly? You would find you are not alone when searching on the Internet.
If you are a G9 owner, you better read this tip, even your G9 is still alive. Why? Because there is a timer-bomb clicking inside! You don’t know when it is going to be triggered.
How to dismantle it? I’ll show you.But take out the battery before reading this tips.
Take off all the screws around the camera. Don’t forget this one.
(click on pictures to enlarge)
Remove the ring on the front cover and open up the camera. Can you see some thing weird? Not sure? Keep going.
Remove the screw here.
Remove screws shown on here, and take off the small cover.
Disconnect the cables and remove these screws too.
The screws fell off! This is the one you have seen on Figure 2. Where is the other one?
Here it is.
Disconnect the cable and turn over the board…
These loosen screws will go anywhere inside the camera. They may short the DC/DC board even the main board.
In this case, I found the fuse (shown with a letter ‘R’) was open. I connected a meter, lucky me, the unit turned on!
What is the remedy?
Before I find out the exact part number for the fuse, here is the temporary solution:
1. replace the fuse with a 1A 32V SMD fuse. (I found the current was not over 500mA)
2. put those screws back on the top cover with a little bit Thread Locker.
If the new fuse won’t solve your problem, you may need to replace the DC/DC board or main board .
Is your G9 still alive? You better open it, check it out.
I have the same finding as miran. The fuse is close but the camera cannot be turned on. What are other possibilities?
I posted some months ago of my experience with canon service Illinois, and their ignoring the issue. So an update: I had my G9 repaired instead by Cameras and Parts. It took awhile… they had to special-order exact board parts. But I’m happy with them and especially their service. I’ve taken very few photos with the rejuvenated camera so far, but will use it more in coming weeks.
@JK
If the fuse is good on the dc dc board, then it’s likely the main board. That’s what happened to mine, it was the main board, my guess is that’s where the short happened because I found the missing loose screw behind the main board. I replaced the main board but now the flash no longer works and my focus is off. I’m getting ready to give up, I wish I had actually just sent it for service from the start. It seems that if the short occurs on the main and not the dc dc board, some other problems can result. Oh well, it’s been interesting as this was my first time working on one of these.
@JK
Sometimes it can be something else and not just the fuse on that dc power board. I checked mine and one screw had fallen out and the other was already loose and getting ready to fall. My fuse was good but there was no power on the camera. It ended up being the main board that got shorted out. The worst part is that I bought the main board and replaced it and I come to find out the circuit for the flash also got shorted out so the flash doesn’t work either. They never make this stuff simple do they, lol! Just thought to share that with anyone that may have the same thing as me with the flash problem once the power is restored.
I have the same problem. I talked to one of the better camera repair shops in London. They get several G9s a week in with the same fault, short-circuited main board caused by the loose screw. They have spoken to Canon who refuse to acknowledge any design fault (they would, wouldn’t they?). The repair price is £145 UK pounds ($227 US). The camera is only two years old, so I really don’t intend spending that on it. I am going to try xscrewdriver’s clear and comprehensive dismantle, see how I get on. My Fix Tips…what a fantastic site this is!
Thanks for bringing me to the idea of checking the fuses on my broken G7. I got it back to life now. Here is a picture of the fuse that was broken on my board:
http://www.flickr.com/photos/1banaan/4185562730/
There are more fuses on the DC board as well as on the main board, be sure to check them all.
Hi, Thanks for this excellent fixtip! It worked fine for me, took me only 4h, 1 Pizza, 1 MaiTai from noticing the failure and fixing it!
Where can i get a new fuse – actual i made a “shortcut” to test it??
For the person that just asked where you can get the fuse, they have the original fuse at camerasandparts.com if you email them and ask. I got the fuse from them but I had a difficult time trying to solder it to the board, it was very difficult without the proper tools, almost impossible actually. My recommendation is that if you order just the fuse, you may want to order a few since they’re very cheap and somewhat tricky to replace and often they go bad in the process. I ended up having to order the board in the end because as hard as I tried, I could not get the fuse replaced on my own. If you’re not skilled at soldering and you don’t have an extremely fine tip, just get the board and avoid the aggravation. They also have the boards at that site too. Also, when you put the fallen screws back in that fell loose, I’d say to lock-tite them for sure as I did. Canon should be fixing this problem for us for free. Thanks to whoever made this website to atleast give us some help with this. This website helped me save my G9 which is now working great again.
A week ago, my G9 died (no power) with no reason. So, I followed the instruction and took it apart. It turns out that the G9 works again after the loose screw is removed (luck me). Thank you very much for the instruction. It takes some tools and careful fingers, but it feels great when it is done.
Thanks again.
hi there does anyone know where the fuse is on a canon g9 please post thankyou