Hi, Thanks a lot! Rolling the mouse upside down on a clean cotton hankie soaked with medical alcohol (97 %) did the trick. I hope I will never have to open up the thing.
I find it quite annoying that one cannot open a relatively expensive product like that mouse anymore. The old Apple mouse could be opened with a fingernail and the mechanism cleaned in under a minute. Nowadays these things just self-destruct through normal use ... Best regards, Jörg. On 11 aug, 20:04, Jim Scott <jesco...@gmail.com> wrote: > On Aug 11, 2011, at 10:39 AM, Jörg Duurkoop wrote: > > > Hi, > > > My Mighty Mouse doesn't scroll down anymore, only up, the buttons all > > work. How can I open the darn thing and have a look? Or should I just > > forget about scrolling down and get a PC mouse? I'm using Tiger on a > > MDD Dual 1.25. > > This is perhaps the most common problem for a Mighty Mouse. Apple's advice is > to turn the MM upside down and briskly rub the trackball (track pea, > actually) back and forth, around and around, and up and down on a shirt. I > prefer using a microfiber cloth. You may have to do this for quite a while > before the scrolling returns to normal function. I do it right next to my > iMac so I can see when the cursor starts moving correctly. > > The object of this "cleaning" exercise is to transfer the dust/body oil/dead > skin cell/whatever clump inside the MM to the fabric you're rubbing the MM on. > > If rubbing the MM on a dry cloth doesn't work, try doing it on a slightly > moist cloth that's been soaked in isopropyl alcohol and then wrung out. The > alcohol will dissolve or loosen the oil that's binding things together. > However, be aware that isopropyl alcohol usually is sold in 70 percent and 90 > percent solutions. The rest of the contents of the bottle is water. When the > alcohol evaporates, the water is left behind, and it *will* corrode the > copper contacts that enable the ability of the trackball to select Dashboard > and other apps when the trackball is pressed down. So go very easy on the use > of isopropyl alcohol. I rarely use it. > > If all else fails, the MM can be opened up for a thorough cleaning. Using a > single-edge razor blade or a thin knife, insert it into the joint between the > top shell and the thin bezel along the bottom. There are about 10 spots > around the mouse where that slim bezel is glued with dots of Super Glue-like > material. Your goal is to severe those glue points one by one until they're > all popped. Then lift off the top shell and disassemble the MM … carefully. > The movable bottom pops out of clips on either side. Note how the ribbons are > routed, etc. > > The trackball assembly can be removed, disassembled, cleaned and reassembled. > Be very cautious and pay attention to how the little rollers and other tiny > bits are oriented during disassembly so you can get it all back together > correctly. > > I've used very sparing dots of Super Glue to put the bezel back on the top > shell. I've also used general purpose plastic solvent cement found in hobby > shops. The brand I'm using right now is Plastruct. It literally melts and > bonds ABS, styrene, butyrate and acrylic plastics to itself or each other. > Only small dots should be used. Use too much and you'll mar the visible > exterior surface of the MM. > > Have fun! > > -- Jim Scott -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
