Replace a broken fuse on the TRS-80 Color Computer's power supply.


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Flip the computer over.
  • Flip the computer over.

  • Remove the two 24.1mm Phillips screws near the front of the case.

  • Remove the five 33.0 mm Phillips screws towards the back of the case.

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Carefully flip the computer right side up.
  • Carefully flip the computer right side up.

  • Lift off the top half of the case.

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  • Near the motherboard, gently pull the keyboard ribbon cable until it becomes free.

  • Lift the keyboard out of the case.

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  • Remove the nine 15.24 mm Phillips screws securing the motherboard in place.

  • When removing the spring door, make sure to keep the door closed.

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  • Remove the 5 jumper cables from the motherboard.

  • Once the jumper cables lift the motherboard up gently; it should lift out easily.

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  • Remove the two 40.6mm Philips screws securing the TRS-80 transformer.

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  • Remove the power cable jumpers from the power supply.

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  • Gently peel back the protective film on the top of the transformer.

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  • Locate the two points the fuse is soldered into the circuit board.

  • Using a soldering iron and soldering wick, desolder and remove the fuse.

  • Place the new fuse into the location of the old one, and solder it in place.

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

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Christopher Paige

Участник с: 21.01.2011

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Cal Poly, Team 11-24, Maness Winter 2011 Member of Cal Poly, Team 11-24, Maness Winter 2011


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