Alpha 4100 CPU fan

[Adrian Graham]

Folks,

Trying to source a non-DEC fan for a 4100 CPU since getting them in the UK
is more and more tricky as time goes on. The originals are 12V 0.17A 60mm
3-wire and I've found some almost-identical-but-not-quite 0.18A variants.
Needed to rewire the plugs to match (12V, sense, gnd) but the machine
reports 'CPU0 Fan Fail' despite the fact the fan is running at speed.

Is +0.01A enough to make the monitor board think the fan's failed? Board
itself is fine as it works with its existing fan.

Cheers,

-- 
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest home computer collection?
www.binarydinosaurs.co.uk