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1)First check if images are displaying
=>If images are not displaying, replace MAIN PCB
2)Checking waveforms with 1KHz Sound pattern
B.Main TP
- Input to U8 : CC53, CC202(Scart1, COMP, PC/DVI)
CC203, CC204(Scart2), C156, C157(AV)
- Output of U12, U14 : C199, C215
Main PCBs Trouble Diagnosis