Some days ago I posted a strange AD defect:
in each text line the first character was corrupted; for
instance "G" of GAME OVER, "I" of INSERT COIN, and so on.
The problem was the adder 7483A in VECTOR TIMER circuit,
position M5.
Thank you for your help,
Marco
www.vernimark.com/arcade
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Received on Thu Nov 29 21:41:14 2007
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