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VectorGlow
10th May 2009, 09:21 PM
Symptom: One of the background layers of graphics (those drawn by the four ?A? EPROMs on the lower board) were being drawn *and* erased in a line in the centre of the screen, also looked as if graphics about to be drawn at the top were being drawn in the middle
Cure: Bad LS86 at location IC50 on the lower board ? replaced