A bargain? and a What's it worth?
in [UK Mac]
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From: Woody on 11 May 2010 16:57 Jim <jim(a)magrathea.plus.com> wrote: > Rowland McDonnell <real-address-in-sig(a)flur.bltigibbet.invalid> wrote: > > > > They can be. I have one of Jon B's old MDDs here and that sounds like an > > > old DC3 taking off. Wondering whether it is possible to change the > > > fan... > > > > Yes, but the Apple-supplied replacements to make the machine quieter[1] > > seemed (when I fitted them) to make the noise a wee bit less intrusive - > > I got the idea that the sound energy's not so much reduced, as increased > > in wavelength. > > In my case the original fan made a sort of knocking noise that was > subtly yet incredibly annoying. The Dorothy Bradbury fan was quieter and > didn't knock. Mine does the knocking noise. I should have changed it some time ago, but it is not really worth it now. -- Woody www.alienrat.com
From: Rowland McDonnell on 11 May 2010 17:17 Jim <jim(a)magrathea.plus.com> wrote: > Rowland McDonnell <real-address-in-sig(a)flur.bltigibbet.invalid> wrote: > > > > It is (assuming you mean the large fan at the back). I got a replacement > > > from Dorothy Bradbury and it made it a much quieter machine. If you do > > > as well then tell them it's for a Mac - the polarity needs reversing > > > apparently. > > > > Could you say more? > > > > Where might I get a suitable *quiet* fan for a MDD 1.25GHz 2G4? > > http://www.dorothybradbury.co.uk/ > > It's best if you email them stating what computer and fan you're after From the listings they've got, I don't see any way to get the fan I'm after unless they could tell me which one would fit. And it wouldn't have occurred to me to ask - after all, who in that field knows or cares anything about Macs at all, especially long-obsolete ones? Anyway, a pointer: ta. I'll be contacting them (if...) > since, as I say, there's polarity issues. <pained> I would naturally assume that any fan I got `not from Apple for the Mac in question' would need to be wired up correctly, and that I would have to find out what that way of wiring was. And I've been bright enough to take such steps since the age of about 7, at at guess. Rowland. -- Remove the animal for email address: rowland.mcdonnell(a)dog.physics.org Sorry - the spam got to me http://www.mag-uk.org http://www.bmf.co.uk UK biker? Join MAG and the BMF and stop the Eurocrats banning biking
From: Woody on 11 May 2010 17:41 Rowland McDonnell <real-address-in-sig(a)flur.bltigibbet.invalid> wrote: > Woody <usenet(a)alienrat.co.uk> wrote: > > > Jim <jim(a)magrathea.plus.com> wrote: > > > > > Rowland McDonnell <real-address-in-sig(a)flur.bltigibbet.invalid> wrote: > > > > > > > > They can be. I have one of Jon B's old MDDs here and that sounds > > > > > like an old DC3 taking off. Wondering whether it is possible to > > > > > change the fan... > > > > > > > > Yes, but the Apple-supplied replacements to make the machine quieter[1] > > > > seemed (when I fitted them) to make the noise a wee bit less intrusive - > > > > I got the idea that the sound energy's not so much reduced, as increased > > > > in wavelength. > > > > > > In my case the original fan made a sort of knocking noise that was > > > subtly yet incredibly annoying. The Dorothy Bradbury fan was quieter and > > > didn't knock. > > > > Mine does the knocking noise. I should have changed it some time ago, > > but it is not really worth it now. > > Knocking? Surely that's a fault condition? Well, that is what it sounds like the day I got it, and that is what it sounded like last week when I fired it up. It isn't ideal but it didn't sound too serious. It is just loud. -- Woody www.alienrat.com
From: Rowland McDonnell on 11 May 2010 21:38 Woody <usenet(a)alienrat.co.uk> wrote: > Rowland McDonnell <real-address-in-sig(a)flur.bltigibbet.invalid> wrote: > > > Woody <usenet(a)alienrat.co.uk> wrote: [snip] > > > Mine does the knocking noise. I should have changed it some time ago, > > > but it is not really worth it now. > > > > Knocking? Surely that's a fault condition? > > Well, that is what it sounds like the day I got it, and that is what it > sounded like last week when I fired it up. It isn't ideal but it didn't > sound too serious. It is just loud. Yeah, that's what I thought about the strange dodgy noise coming from the fan on my old 2G4. Then one day the bearing of the failing fan seized without warning: the graphics card, one of two CPUs, and a few sticks of RAM got fried. `it didn't sound too serious' - yeah, well, nothing is, until the catastrophic failure. Rowland. -- Remove the animal for email address: rowland.mcdonnell(a)dog.physics.org Sorry - the spam got to me http://www.mag-uk.org http://www.bmf.co.uk UK biker? Join MAG and the BMF and stop the Eurocrats banning biking
From: Jim on 12 May 2010 01:11
Rowland McDonnell <real-address-in-sig(a)flur.bltigibbet.invalid> wrote: > > since, as I say, there's polarity issues. > > <pained> > > I would naturally assume that any fan I got `not from Apple for the Mac > in question' would need to be wired up correctly, and that I would have > to find out what that way of wiring was. In my case I'd simply mentioned what I wanted the fan for and they went "Ah! we'll need to swap the end around!" and did it for me. Oh - I've found the original model number as order from them - it's FB-120-H1A -- 2-wire -- Mac polarity. Jim -- "Microsoft admitted its Vista operating system was a 'less good product' in what IT experts have described as the most ambitious understatement since the captain of the Titanic reported some slightly damp tablecloths." http://www.thedailymash.co.uk/ |