A604n not working

[paul1981]

Did you mean ACA620? It's unlikely but not impossible that your A604 is faulty. If you don't have a spare 600 then I suppose you have no choice other than to return it.

Before you return it though, are you absolutely sure there's no shorts anywhere? The floppy drive screw can get awfully close to the motherboard chip ram IC...worth checking if you've fitted the Subway clock port PCB to the A604.

[paul1981]

Impressive stuff. Thanks for the link too. Of particilar interest was the age related Blitter problems (15 years or more of heavy use, applies to all Amiga's from what I can gather).

Is Jens going to remove C4 from the A604N designs I wonder? I don't think he has much choice except to remove the capacitor, but perhaps leave the pads on the board to solder your own in if required. Maybe a toggle switch for C4 would be a good idea so that both cases are covered for when our Amiga's do start to exhibit Blitter ageing.