TRS-80 Color Computer Fuse Replacement
crwdns2959932:0crwdnd2959932:0Christopher Paigecrwdnd2959932:0crwdnd2959932:0crwdnd2959932:04crwdnd2959932:0crwdne2959932:0
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crwdns2959928:0crwdne2959928:0 ↓Replace a broken fuse on the TRS-80 Color Computer's power supply.
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Flip the computer over.
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Remove the two 24.1mm Phillips screws near the front of the case.
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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.
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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.
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Lift the keyboard out of the case.
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Remove the nine 15.24 mm Phillips screws securing the motherboard in place.
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When removing the spring door, make sure to keep the door closed.
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Remove the 5 jumper cables from the motherboard.
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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.
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Using a soldering iron and soldering wick, desolder and remove the fuse.
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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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Cal Poly, Team 11-24, Maness Winter 2011 crwdns2935289:0Cal Poly, Team 11-24, Maness Winter 2011crwdne2935289:0
CPSU-MANESS-W11S11G24
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