Part Number for a MicroVAX II Fan
robert.jarratt at ntlworld.com
Sat Jan 23 17:25:56 CST 2010
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org [mailto:cctalk-
> bounces at classiccmp.org] On Behalf Of Tony Duell
> Sent: 23 January 2010 18:47
> To: cctalk at classiccmp.org
> Subject: Re: Part Number for a MicroVAX II Fan
> > > Is there something special about this fan? Or will any fan of the
> > > dimensions and operating voltage work? DEC rarely used strange fans
> > > (the
> > > 11/44 being the obvious exception!), so you might get a generic
> > > replacement that will drop straight in.
> > I had thought of this, it has a connector that I have not seen
> before, I
> > don't know what sort of fan I would need (voltage etc), I probably
> ought to
> > take
> > a look and see if I can replace it as you suggest.
> Is this connector fixed on he fan chassis, or on the end of a piece of
> cable? If the latter, you can probalby find a way to move the connector
> and/or cable to the new fan.
> Most built-in connectors on fans are just the solder tags that you
> solder the power leads too. There ware sockets made for some fans that
> would push onto these (ot you could use small faston terminals -- DEC
> were fond of this trick).
> Are there any marking at all on the old Fan?
Finally got round to getting the fan out. It is a 120mm fan, marked as
Model A 31728-10
The only readily available DC fans I can find are 12V, guessing these would
run at a reduced speed compared to the ones I have in the machine now, but
would probably otherwise work OK. What do you reckon? If this would work I
might replace them both with quieter fans (not sure what the flow rate of
these fans is any idea?
The connector is difficult to describe. The fan has two tags that stick out
and the cable has a plastic block on the end with a socket that fits the two
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