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Amiga Hardware Issues and discussion / Re: Annoying A1200 screen flicker / wavy on disk access
« Last post by mykrowyre on April 28, 2024, 12:53:56 AM »From memory D215A. Is there a component there?
Fix is normally, ceramic cap across collector and emitter pads.
Yes a cap is there. The 1.2V reference is perfectly stable. Anything pulled up to 5V pulses with the floppy drive access.
I measured about a 150mv dip each time the floppy ticks.