I have had the same symptom on a couple of v4's including my own. Does the drive make a hunting noise when the tray goes back in after the swap? It is more likely the 5v supply. Use one of these alternative 5v points for pin36. It worked for me.
Use the one which applies to your board:
v4 alt 5v
v4 alt 5v gap rom
Last edited by Nightbird; 02-21-2003 at 11:02 PM.
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