Mac mini Model A1283 PRAM Battery Replacement

Step 1 Internal Frame

• In the next few steps you will be removing the AirPort and Bluetooth antennas (shown in red) from the internal frame. Be very careful, as breaking the brackets will require replacing the internal frame.
• We will first remove the AirPort antenna, located in the lower left corner of this picture.
Step 2



• Slightly squeeze the two retaining arms toward each other and lift the AirPort antenna off its post.
• Squeezing the two posts excessively will surely break them off the internal frame. Work delicately.
• During reinstallation, you will have to slightly squeeze the two posts together so they fit into the openings on the AirPort antenna board.
Step 3
• The two Bluetooth antenna boards simply lift off the internal frame.
• Grab the Bluetooth antenna nearest the port side of the computer by the edges of the board and pull it straight up off the internal frame.
• Pull carefully, as it may offer significant resistance and release suddenly.
Step 4
• Remove the antenna board near the front of the mini by pulling it straight up off the internal frame.
• If necessary, remove the piece of tape securing the antenna leads to the internal frame.
• Be sure to keep track of the springs under each of the three antenna boards.
Step 5
• Use the flat end of a spudger to pry the audio ribbon cable connector up off the audio board.
Step 6
• Remove the following four screws securing the internal frame to the bottom housing:
• Three 6.7 mm Phillips #00 screws
• One 9.5 mm Phillips #00 screw
• The screw in the lower right corner of this image is recessed deep in the internal frame and longer than the other three screws. A flashlight and a thin screwdriver aid in removal.
Step 7
• Lift the internal frame off the bottom housing, starting at the rear edge, until you feel the concealed edge connector on the motherboard disconnect. Then lift straight off, minding the bluetooth and 802.11 antenna cables.
• When reassembling, the wifi antenna wire routes to the inside of the vent and then over the top of the vent.
Step 8 PRAM Battery
• Push the PRAM battery toward the center of the logic board and pull it up out of its holder. You'll have to push the battery in further than you'd expect in order to get it to pop free.
• Don't bend the metal finger too much or it will break off, requiring a new logic board.
• When inserting the new battery, make sure the side with writing along the edges faces the black plastic holder. You should also insure that the metal connectors make contact with the battery (you can bend them forward if they do not).

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Walter Galan

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