Nikon D3100 Motherboard Replacement
Jet Mejia and 8 other contributors
Last updated on Jun 30, 2025
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Introduction
Go to step 1 ↓If your camera is malfunctioning or the external connection (micro USB and HDMI) ports are not working, then the camera's motherboard might be faulty and needs to be replaced. Before starting with this guide, refer to this troubleshooting page to check if there are any other possible causes.
What you need
Tools
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Spudger4.9
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Remove two of the 4mm screws indicated by the circles on the bottom side of the camera.
Ask FixBot
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Remove four of the 3mm screws around the eye piece located on the top of the back panel, including the screw hidden behind the auto focus label.
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Remove the 3mm screw behind the rubber grip on the top right of the back panel.
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Peel back the rubber grip on the right side of the camera using a spudger.
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Remove two of the 5mm screws under the rubber grip.
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Tool used on this step:Tweezers$4.99
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Starting from the top, gently lift the back panel of the camera off. Slowly separate the back panel from the main body of the camera.
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Carefully remove the ribbon using a spudger to lift up the connector and then use tweezers to pull out the ribbon.
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Separate the back panel from the main body of the camera.
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Remove nine of the 3mm screws connecting the metal plate to the plastic panel.
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Remove the two ribbons connecting the LCD screen to the metal plate using the same method from Step 5.
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Tool used on this step:Tweezers$4.99
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Use tweezers to gently lift the yellow tape from the back of the camera.
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Remove the plug located on the top-right side of the camera.
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Remove the plug located on the top-left side of the camera.
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Use a Philips #00 Screwdriver to remove the five 3 mm screws marked in the image.
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Gently pull out the side wall of the camera so that the motherboard comes out easier.
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Gently lift the motherboard to separate it from the back of the camera.
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Use a plastic spudger to detach the ribbon.
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To reassemble your device, follow these instructions in reverse order.
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Team
USF Tampa, Team 14-1, Eyestone Fall 2016 Member of USF Tampa, Team 14-1, Eyestone Fall 2016
USFT-EYESTONE-F16S14G1
3 Members
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