Does reversed battery polarity brick the camera? - Hotwire! Hardware Mods, Accessories and Insights - CHDK Forum
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Does reversed battery polarity brick the camera?

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Offline viktorzk

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Does reversed battery polarity brick the camera?
« on: 03 / May / 2009, 12:56:17 »
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Hello,

I connected the original Canon battery to the camera with extension cables, but accidentally reversed the polarity. Now the camera does not work at all.
1) Can it be repaired?
2) I will not have access to a service centre for the next 2 months, so is there anything that i can do?

Thank you!
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Offline Hacki

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Re: Does reversed battery polarity brick the camera?
« Reply #1 on: 03 / May / 2009, 13:39:45 »
Quote
1) Can it be repaired?

I doubt it.

Quote
2) I will not have access to a service centre for the next 2 months, so is there anything that i can do?

Depends on your skill + tools. Maybe there's just one part burned out which can be replaced.

I have connected my camera to a power supply with the wrong polarity 2 or 3 times, but that PSU only supplys 2 amps max, and nothing special happend. As your camera does not turn on at all, i assume its totally bricked. Try connecting it to a PSU with amp & voltage display, see what happens. Is there a current flowing when its off, does it short circuit when you try to turn it on? (happened when i burnt out my old camera). Maybe it'll work with a PSU, when theres somethin burnt out in the battery compartement..


Regards
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Offline fatony

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Re: Does reversed battery polarity brick the camera?
« Reply #2 on: 23 / June / 2009, 00:52:35 »
You can check for any surface mount fuses. I did something similar with a Nintendo DS and found on the internet the locations of the fuses on the board to bridge/replace.  Apparently a lot of other people also bricked their DS with bad batteries.

Next things after that to check would probably be diodes and then transistors near and around the battery terminals
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databoy

Re: Does reversed battery polarity brick the camera?
« Reply #3 on: 23 / June / 2009, 04:04:18 »
You are asking for technical advice but have neglected to mention the model number of the camera.

Have you taken it apart and had a good look with a magnifying glass?

Some electronic equipment have zener diode protection for over voltage and MOV's for lightning protection.

If you are lucky the zener diode has gone short circuit.
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Offline BikerRay

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Re: Does reversed battery polarity brick the camera?
« Reply #4 on: 10 / June / 2010, 08:40:57 »
I managed to destroy my A720IS by shorting out the aux power i/p. The aux i/p connects to the battery via a 3.2A fuse, and is live all the time. Replacing the internal fuse didn't help, and Canon want $128 to fix it. Be warned!
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