PCB Repair Logs Terra Force

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Terra Force

Terra Force
Marquee terra force.jpg
Manufacturer Nichibutsu
Year 1987
PCB Image Reserved
Pin Out Jamma

Repairer: VectorGlow
Forum Thread: Terra Force PCB Repair

Symptom: RAM TEST NG on power up
Cure: TMM2063 (8464) RAMs at locations F7 and H7 were faulty on the top board (TF-1A)

Symptom: Some background graphics blocky
Cure: Bad TMM2015 (CY7C128) RAM at location F16 on the top board (TF-1A)

Symptom: Sometimes one layer of background graphics turned into a dark, furry-edge ‘shadow’
Cure: Bad TMM2015 (CY7C128) RAM at location F17 on the top board (TF-1A)

Symptom: Random dots, dashes etc in the rightmost columns if the display
Cure: Bad TMM2015 (CY7C128) RAM at location C12 on the top board (TF-1A)


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