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Nikon D40 Mainboard Replacement

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Nikon D40 Mainboard Replacement

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The mainboard controls all of the software on the Nikon D40. A faulty mainboard can cause problems that will require a new board. This guide will show you how to replace the camera's mainboard.

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    1. Nikon D40 Mainboard Replacement, Back Cover: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • Remove the two visible 6.0 mm Philips #0 screws on the left and right sides of the viewfinder. These screws are highlighted in red.

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    2. Nikon D40 Mainboard Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nikon D40 Mainboard Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
      • Remove the four 6.0 mm Philips #0 screws on the left and right sides of the camera.

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    3. Nikon D40 Mainboard Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • Remove the four highlighted 3.0 mm Philips #0 screws on the bottom of the camera.

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    4. Nikon D40 Mainboard Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • While pulling the bottom down, remove the back of the camera.

      • Be careful not to pull too hard on the back as it is connected via a ribbon cable. Be sure to disconnect this cable on the main board.

      • To disconnect the ribbon cable pull the small black tab upward and pull gently on the cable.

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    1. Nikon D40 Mainboard Replacement, Mainboard: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nikon D40 Mainboard Replacement, Mainboard: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
      • Remove the solder connecting the red wire to the mainboard.

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    2. Nikon D40 Mainboard Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • Desolder the 4 smaller wires near the bottom of the mainboard.

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    3. Nikon D40 Mainboard Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nikon D40 Mainboard Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
      • Use the plastic opening tool to release the ribbon cables attached to the mainboard.

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    4. Nikon D40 Mainboard Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
      • Remove the five 3.0mm Philips #1 screws holding the mainboard down.

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    5. Nikon D40 Mainboard Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nikon D40 Mainboard Replacement: crwdns2935265:09crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
      • Lift the mainboard up to reveal the final connection.

      • Carefully detach the white cable from the board.

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To reassemble your device, follow these instructions in reverse order.

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Joe Leija

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Cal Poly, Team 6-19, Maness Winter 2014 crwdns2935289:0Cal Poly, Team 6-19, Maness Winter 2014crwdne2935289:0

CPSU-MANESS-W14S6G19

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What is the ordering of the small wires on the bottom? It is hard to put back together from the photos. Thanks!

Joseph Ruskiewicz - crwdns2934203:0crwdne2934203:0 crwdns2950251:0crwdne2950251:0

wheres the power source? i mean the fuse

Gringo Maputi - crwdns2934203:0crwdne2934203:0 crwdns2950251:0crwdne2950251:0

in the main board located kindly put markings on it

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