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2023-06 TRS-80 Model 4 gate array by bryanwann
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bryanwann
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Boot!
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bryanwann
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Power up and reset
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bryanwann
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Letting the smoke out a minute after power-on, RIFA cap went
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bryanwann
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With top off
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bryanwann
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CRT
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Disk 1 connector
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Blown capacitor?
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bryanwann
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Motherboard with RF shield removed
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PSU
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RAM sockets, 64k installed
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Z80 CPU
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CRT board
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bryanwann
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Burst capacitor
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Hidden screw to get into chassis
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bryanwann
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Replacement PSU in place
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Replacement PSU
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RF plate over expansion bus pins
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Expansion, RS-232, and printer ports
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bryanwann
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Booted to Model III ROM BASIC
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bryanwann
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Original PSU
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bryanwann
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bryanwann
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backside of new PSU
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