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PowerBook G4 Aluminum 15" 1-1.5 GHz PRAM Battery Replacement

Escrito Por: iRobot (y 2 de otros participantes)
  • Comentarios: 30
  • Favoritos: 7
  • Terminaciones: 16

Dificultad

Difícil

Pasos

16

Tiempo Requerido

Sugerir un tiempo??

Secciones

3

Banderas

0

Introducción

The time and date, as well as other settings, are kept by the PRAM battery when your machine is off.

  1. Use a coin to turn the battery locking screw 90 degrees clockwise.

    • Use a coin to turn the battery locking screw 90 degrees clockwise.

    • Lift the battery out of the computer.

    Editar

  2. Remove the four Phillips screws from the memory door.

    • Remove the four Phillips screws from the memory door.

    • Slide the memory door away from the memory compartment.

    Editar

  3. Remove the following 8 screws:

    • Remove the following 8 screws:

    • Two 3 mm Phillips in the battery compartment, on either side of the battery contacts.

    • Two 9 mm Phillips on either side of the memory compartment.

    • Four 16 mm Phillips along the hinge.

    Editar

  4. Rotate the computer 90 degrees clockwise, so that the power receptacle faces you.

    • Rotate the computer 90 degrees clockwise, so that the power receptacle faces you.

    • Remove the three 3 mm Phillips screws.

    • When replacing these screws, you must place each screw in the correct order. Begin by installing the screw closest to the display hinge, and go out from there.

    Editar

  5. Turn the computer 90 degrees clockwise so that the hinge faces you.

    • Turn the computer 90 degrees clockwise so that the hinge faces you.

    • Remove the bottom 5 mm Phillips screw on either side of the hinge (two total).

    Editar

  6. Rotate the computer 90 degrees clockwise, so that the ports face you.

    • Rotate the computer 90 degrees clockwise, so that the ports face you.

    • Remove the three 3 mm Phillips screws.

    • When replacing these screws, you must place each screw in the correct order. Begin by installing the screw closest to the display hinge, and go out from there.

    Editar

  8. Turn the computer over and open the display.

    • Turn the computer over and open the display.

    • Remove the 4.2 mm 1/16" H 1.5 hex screws in either corner, next to the display (a T6 Torx driver will also do the job nicely).

    Editar

  9. This step covers the hardest part to get inside this computer. Take a deep breath and think happy thoughts.

    • This step covers the hardest part to get inside this computer. Take a deep breath and think happy thoughts.

    • Grasp the back corners of the upper case and pull up, disengaging hidden tabs on the sides. Do not pull the upper case off yet; you still need to free tabs in the front of the case.

    • The seam is beneath the plastic molding on the upper case.

    Editar

  10. There is one latch that stops you from pulling the upper case right off, located on the left side of the optical drive slit. To free the upper case, you will be pulling a thin metal latch toward you, freeing it from the clasp holding it in place.

    • There is one latch that stops you from pulling the upper case right off, located on the left side of the optical drive slit. To free the upper case, you will be pulling a thin metal latch toward you, freeing it from the clasp holding it in place.

    • Pry up the left side of the upper case slightly with your hand and wedge a spudger into the seam between the upper case and lower case.

    • Leave the tool in place applying pressure to the upper case for the next step.

    Editar

  11. Place enough pressure on the upper case to allow you to slide a tool just within the seam between upper case and lower case as shown in the picture. A dentist's hook, push pin, or similar tool will work.

    • Place enough pressure on the upper case to allow you to slide a tool just within the seam between upper case and lower case as shown in the picture. A dentist's hook, push pin, or similar tool will work.

    • Do not yank the upper case off as soon as you free the clasp. The case is attached to the logic board via two ribbon cables.

    • Delicately slip the tip of your tool behind the silver metal latch and pull it forward while pulling up on the case. This may take some effort.

    • Alternatively, you can free the clasp with a small flathead screwdriver through the CD slot. The clasp is 1-3/16 in (3cm) from the left side of the slot. Use the screwdriver to lift out (or press back) the felt lining; then use the screwdriver to pull the clasp (shiny metal) forward to free it from the catch behind it (dull metal).

    Editar

  12. Lift the back of the case up and work your fingers along the sides, freeing the case as you go. Once you have freed the sides, you may need to rock the case up and down to free the front of the upper case.

    • Lift the back of the case up and work your fingers along the sides, freeing the case as you go. Once you have freed the sides, you may need to rock the case up and down to free the front of the upper case.

    • Rotate the upper case up and toward the screen, so that the upper case rests against it.

    Editar

  13. Remove the orange tape securing the trackpad ribbon to the logic board.

    • Remove the orange tape securing the trackpad ribbon to the logic board.

    • Disconnect the trackpad ribbon from the logic board.

    Editar

  14. This is a diagram of the keyboard ribbon clamp connector you will disconnect in the next step.

    • This is a diagram of the keyboard ribbon clamp connector you will disconnect in the next step.

    • 1) With your fingernails, grasp the locking bar on either side and pull up a small amount (about 1/16" or 2 mm).

    • 2) After disengaging the locking bar, slide the cable out of the connector.

    Editar

  15. Loosen the keyboard ribbon clamp by pushing the thin black piece toward the screen, using the tips of your fingers.

    • Loosen the keyboard ribbon clamp by pushing the thin black piece toward the screen, using the tips of your fingers.

    • The black piece is very fragile and easily broken. Use care when separating it from the main socket.

    • Slide the grey keyboard ribbon out of the loosened connector.

    • Remove the upper case from the computer.

    Editar

  16. Use a spudger to pry up the PRAM battery from the optical drive.

    • Use a spudger to pry up the PRAM battery from the optical drive.

    Editar

  17. Disconnect the PRAM battery cable from the logic board and pull the PRAM battery out.

    • Disconnect the PRAM battery cable from the logic board and pull the PRAM battery out.

    Editar
Conclusión

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

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iRobot

Miembro Desde 24/09/09

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For those that are trying to do this in 2021, when new replacement parts are basically unavailable — you can replace just the cell itself with a new unit — Panasonic actually still makes these 3032 rechargeable cells. The part is here: https://www.digikey.com/en/products/deta...

The new ones are a 3V cell; the Apple spec’d battery is 3.7V, but it seems to work fine. You’ll need basic soldering skills — take the old unit out, unwrap it from the kapton tape, unsolder the old one and solder in the new one. Make sure to use a hot iron and spend a minimal amount of time heating (not more than a second or so). You want to heat the terminal, but not the battery itself.

When I did this, my old Apple OEM battery was reading a 1.03V charge; the new one was a full 3.05 volts.

david - Contestar

An update 3 weeks later — the cell above did NOT work. Battery stopped holding a charge and was leaking badly; I think this may be because the new cell was only 3.0V and the original was 3.7V, and possibly the charging circuit was overcharging it.

I have found a 3.7V cell on ebay, so I’m going to try that next.

david -

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