Alternatively, there is the consideration that the fanless design of the 128K to Plus machines was an aberration from the outset, well illustrated by the existence of aftermarket offerings such as the Kensington System Saver, the name of which alone is testimony to the real-life performance of the Macs concerned.
I use my 512Ke much less than I should wish to do simply because it is fanless. The bucket above the analogue board is not louvred, and that part of the case gets damned hot. Not warm, as CRT iMacs do, but hot. The convection path from the bottom slots in the sidewalls of the bucket to the 'chimney' in the handle does not ensure that air is swept across the power/sweep board components, but centrally up and around the CRT. There is a definable stagnant 'well' of hot air in the top of the internal space that is not easily replaced. I have long contemplated addition of active ventilation to my Mac. The flat-box Kensingtons are rarely offered on eBay, and those that are are for 120V North American mains supplies.
I have my Mac apart at the moment to add a Dove SCSI card. Since I have chosen not to use Dove's placement of the SCSI port in the cover above the battery, I have accepted that I may as well also make another hole in the bucket for a 12-V fan exhaust, and make slots in the bucket above the FBT. I suggest that you accept your good fortune in getting a Kensington unit, and explore replacement of the present fan with a modern quiet unit. Trawl these Forums, or PM jdw directly for advice about his source of quiet high-efficiency fans. You can easily substitute the Kensington's surge-suppression with a power-board containing a surge suppressor, but the fan is a potential lifesaver for your Plus.
de
I use my 512Ke much less than I should wish to do simply because it is fanless. The bucket above the analogue board is not louvred, and that part of the case gets damned hot. Not warm, as CRT iMacs do, but hot. The convection path from the bottom slots in the sidewalls of the bucket to the 'chimney' in the handle does not ensure that air is swept across the power/sweep board components, but centrally up and around the CRT. There is a definable stagnant 'well' of hot air in the top of the internal space that is not easily replaced. I have long contemplated addition of active ventilation to my Mac. The flat-box Kensingtons are rarely offered on eBay, and those that are are for 120V North American mains supplies.
I have my Mac apart at the moment to add a Dove SCSI card. Since I have chosen not to use Dove's placement of the SCSI port in the cover above the battery, I have accepted that I may as well also make another hole in the bucket for a 12-V fan exhaust, and make slots in the bucket above the FBT. I suggest that you accept your good fortune in getting a Kensington unit, and explore replacement of the present fan with a modern quiet unit. Trawl these Forums, or PM jdw directly for advice about his source of quiet high-efficiency fans. You can easily substitute the Kensington's surge-suppression with a power-board containing a surge suppressor, but the fan is a potential lifesaver for your Plus.
de