Path: news1.icaen!news.uiowa.edu!chi-news.cic.net!howland.erols.net!news-peer.sprintlink.net!news-pull.sprintlink.net!news-in-east.sprintlink.net!news.sprintlink.net!Sprint!164.67.241.200!myriad!mail From: nobody@REPLAY.COM (Anonymous) Newsgroups: comp.sys.apple2 Subject: Re: WTB: System Saver GS or Equiv Date: 18 Jul 1997 13:00:10 -0700 Organization: Replay and Company UnLimited Lines: 107 Message-ID: <199707181948.VAA17856@basement.replay.com> To: comp.sys.apple2@myriad.alias.net X-001: Replay may or may not approve of the content of this posting X-002: Report misuse of this automated service to X-URL: http://www.replay.com/remailer/ darsys@pro-entropy.cts.com (Eric A. Seiden) wrote: >Am looking for one of these babies to help keep my Proline BBS site up and >running. Current one is dying and system will overheat without it. Email me >directly with offers or inquiries. > > Thanks > Eric Eric, here's a repost of my System Saver GS repair article: Hacker's Corner Replacing the System Saver IIGS Fan Does your Kensington System Saver IIGS sound like a broken record? It may be that the fan inside the unit is showing wear. The good news is that replacing the fan is an easy and rewarding task. I knew my fan was starting to die when it sounded like it was wheezing during spin-up. The fan, a Sprite model SU2C7, uses sleave bearings, whose lifespan is determined by the lubricating oil supply in the bearings. When enough of the oil evaporates, metal will grind against metal resulting in heat and resistance that cause the fan to quickly lock-up. Better quality fans use ball-bearings, but Kensington apparently used the cheapest component available. Even among the models with sleave bearings, the SU2C7 is the least capable. It can only move 15 cubic feet of air a minute (half what a typical PC fan moves) and has a 55,000 hour rating. In looking for a replacement for my dying fan, I chose to use a better model. The Sprite model SU2B1 has the same dimensions as the SU2C7 used in the System Saver and is readily available from Digi-Key corporation. It uses ball bearings for long life (the fan is rated for 73,000 hours) and can move 28 cubic feet of air a minute. The higher quality is readily apparent: the replacement is currently noticeably quieter than the original even though it is moving more air per minute. Make sure the System Saver is unplugged before opening the case. Opening the System Saver case involves removing eight screws. You must remove the foam weatherstriping along the periphery of the case to expose the screws. Once the weatherstripping is removed, you should be able to see the screw access holes. They are arranged as shown in the following diagram (bottom view of the System Saver): FRONT ______________________________________________________________ | ________________________________________________________ | | | | | | | * | | | | _____________ | | | *| | | Screw holes revealed ------>|* | | | | | after removing foam | | | | | Fan | | | | | | | | | | | | | | | | | | | | | | | |_____________| | | | *| |* | | | | | | | | | | | | | | | | | | | | | | | | | | *| |* | | | | | | | * | | | |________________________________________________________| | |______________________________________________________________| BACK Once inside, the fan can be removed by unplugging the power cord that connects it to the circuit board. A grounding wire that is attached by a screw must also be removed. The fan itself is held to the case by two screws. Once you remove the SU2C7, you can replace it with the SU2B1. Now mount everything back together again with the screws. Apply new foam weatherstripping to the periphery of the bottom of the system saver. The refurbished System Saver is now better than a factory new model! Notice the difference in sound: a quiet hum rather than a load rumble. If you have a lot of cards, you will notice that the inside of the IIGS is a lot cooler too. An upgraded System Saver is a great way to counteract accelerator instability caused by heat. Sources and parts needed: 1) Part: Sprite model SU2B1 (Digi-Key Part No. CR103-ND) Source: Digi-Key Corp. (1-800-344-4536/www.digikey.com) 2) Part: Foam weatherstripping tape (3/8th inch width, 3/16th inch thick) Source: Home Depot (or a comparable hardware store) -Scott G.