The GoPro Hero3Plus Black Edition can be identified by its model number: CHDHX-302. It's an eighth generation camera that was released in October 2013. The GoPro Hero3Plus Black Edition is a Wi-Fi capable, 4K resolution digital camcorder.

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Gopro floaded in sea saltwater

I dropped my Gopro in the ocean about three months ago while the case was broken. Now it doesn't work but keeps "beeping" and a red light flashes. Can it be fixed?

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Hi,

As you know water and electronics and electricity are not a good mix.

The water causes corrosion and provides circuit paths for the electricity which were not in the camera's operating design and could damage the components.

First do not turn on your camera and then you need to remove the battery as soon as possible from the camera to minimize further damage.''

Then you need to dis-assemble the rest of the camera and clean all the affected parts using Isopropyl Alcohol 90%+ to remove all traces of corrosion and water. Do not use "rubbing alcohol" as in some cases this is only 70% and is not as effective. If you do check the label to verify the amount

Here is a link that in general, describes the process.

Electronics Water Damage

You may have to replace the battery as it is very hard to recover a battery from water damage.

As always with electronics, especially surface mounted PCBs be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board.

Hopefully after you have done all this the camera might possibly work correctly again.

Here is a link to the ifixit guide(s) for repairing your camera.

GoPro Hero3+ Black Edition Repair

If this process seems too daunting, take your camera to a reputable, professional camera / electronics repair service and ask for a quote for a repair.

If you decide to do this, do it sooner than later.

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