On Sunday, December 15, 2002, at 07:04 PM, Mark Benson <[EMAIL PROTECTED]> wrote:
> I have recently acquired a Mac Plus, given I live in the UK I bet no > soul on here can guess where from ;). > > ANYhoo. I want to fan ventilate it without marking the case (which is > in superb condition apart from a little grime) to prevent it dying of > heat haze or whatever they suffer from :) > > 1. Where is the best place to mount a fan. As close as possible to the source of heat (ie analog board and psu), in theory. However if you mount the fan assembly inside the case, you'll have to do some modification, even just gluing some mounts in place or hanging some brackets off the a/b. The alternative is to put the fan assembly on the outside, drawing air through the vents on the top. Not particularly good looking, I agree, but a much better solution than cooking the Mac and you can easily remove it. > 2. Where do you draw power from?? For an internal fan, tap 12V from the psu. But the Plus psu may be marginal anyway so do you want to add a couple of watts on top? For an external fan, you have 220/240V to play with so you can afford to suck a lot of air through the Plus to cool it. The mains powered Kensington System Saver on my IIgs draws a lot more air than it needs to. > 3. Sucking out or blowing in? I mean he fan !!! In general, you should look to creating a smooth path to draw air out of a computer than blowing it in. It took the designers of PC ATX systems a while to work this out; in many designs, early ATX psus were designed to blow warm air from the psu onto the processor... For a Mac Plus, it should be clear that there is no point blowing air into the case from (near) the top because there is no clear exit path. My own philosophy towards potential overheating of a 128/512/Plus is: 1. Don't worry too much if you have spare boards and a willingness to wield a soldering iron. 2. Don't leave them running when not actively in use. 3. Don't leave them running unattended. Phil -- Compact Macs is sponsored by <http://lowendmac.com/>. Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> The FAQ: <http://macfaq.org/> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
