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Commodore 64 Central Processing Unit (CPU) Replacement

Introduction

The Central Processing Unit (CPU) or Micro Processing Unit (MPU) is the 8-bit processor for the Commodore 64.

What you need

  1. Careful: steps 1-2 are sourced from a guide that's marked as in-progress.

    Commodore 64 Central Processing Unit (CPU) Replacement, Removing screws: step 1, image 1 of 3 Commodore 64 Central Processing Unit (CPU) Replacement, Removing screws: step 1, image 2 of 3 Commodore 64 Central Processing Unit (CPU) Replacement, Removing screws: step 1, image 3 of 3

    • 1. Remove three 6.75mm ph2 screw heads from the casing

    Edit

  2. Commodore 64 Central Processing Unit (CPU) Replacement, Opening: step 2, image 1 of 2 Commodore 64 Central Processing Unit (CPU) Replacement, Opening: step 2, image 2 of 2

    • 2. Split the case of the C64 open by pulling up on the case towards you

    • Do not pull too hard that you break the clips.

    Edit

  4. Commodore 64 Central Processing Unit (CPU) Replacement, Detach Keyboard from the motherboard: step 3, image 1 of 2 Commodore 64 Central Processing Unit (CPU) Replacement, Detach Keyboard from the motherboard: step 3, image 2 of 2

    • 1. Detach the multi-colored wire bundles connected to the motherboard.

    Edit

  5. Commodore 64 Central Processing Unit (CPU) Replacement, Locate the CPU: step 4, image 1 of 1

    • Locate the CPU chip which is labeled 'MOS 6510 3782'

    Edit

  6. Commodore 64 Central Processing Unit (CPU) Replacement, Removing the CPU chip: step 5, image 1 of 2 Commodore 64 Central Processing Unit (CPU) Replacement, Removing the CPU chip: step 5, image 2 of 2

    • 3. Loosen the CPU chip with a Phillips screwdriver. Then use your hand to pry up the CPU chip from the motherboard.

    Edit
Conclusion

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

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Silvanus Clarke

Member since: 09/26/14

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Team

USF Tampa, Team 13-6, Staggers Fall 2014 Member of USF Tampa, Team 13-6, Staggers Fall 2014

USFT-STAGGERS-F14S13G6

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One Comment

there are two problems

1. Use an spudger for lifting the C.P.U instead of an screw driver bit to help alleviate concerns of bending the pins,

2. There is an step missing which involves cutting the tape seen here.

- Jordan .F

Jordan Fryman - Reply

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