Just one thing at this time... took the switch out and checked it with a multimeter, it is the switch
On Wed, 20 Mar 2024 at 00:26, Brian K. White <b.kenyo...@gmail.com> wrote: > I had to search to find: > "There is exactly one key on my m100's keyboard that rufuses to work, > the K key." > > What was anyone supposed to do with that? > > What I said below and the video wouldn't help with a 100. It only > applies to a 102. > > 100 has a totally different kind of keyswitch, and no similar easy > possible fix to try, other than just wash the switch with distilled > water (to clean out possible sugars from drinks), then alcohol (to dry > the water), then deoxit (to refresh the actual copper contacts inside), > and actuate the switch a bunch of times (after the deoxit soaks a while, > you also need a little mechanical action to actually scrub away the > oxidized surface). > > If simply washing and deoxit doesn't make it work, then you have to look > for corroded traces, loose solder joints, desolder and disassemble the > keyswitch itself, maybe replace from ebay (the switches are available > sometimes). > > -- > bkw > > On 3/20/24 00:36, Peter Vollan wrote: > > It would have been nice if you guys had helped me out with this when I > > recently posted that my "K" key had inexplicably quit. I swapped the > > keycap out with the ESC key because that is rarely used; I didn't think > > of the extra shift key. Long story short, I overestimated my abilities > > and thought I had wrecked my unit permanently, but by hook or by crook, > > and solder bridges and resistor legs, my keyboard was fixed. Except for > > the escape key. Actually the cassette relay and the modem don't work, > > but I think that is from changing those resistors and replacing the > > backup battery. Don't see how it could be the keyboard. > > > > On Mon, 18 Mar 2024 at 08:58, Brian White <b.kenyo...@gmail.com > > <mailto:b.kenyo...@gmail.com>> wrote: > > > > 102 has carbon impregnated silicone rubber domes like calculator or > > remote buttons. > > > > With care it's possible to lift the top of the key switch body off > > and lift out the rubber dome, and see if the contacts or button are > > dirty. Maybe use some deoxit with a q-tip to clean the contacts, > > maybe clean the carbon pad. > > > > I had a stuck T key where everything looked fine but the carbon pad > > maybe just looked worn. I swapped the rubber dome with the > > right-shift key (a key that I don't use as much, and has a duplicate > > on the left anyway, and was much less worn because all the previous > > owners probably used it less than T also) and afterwards not only > > did the T work, the right shift still worked! > > > > To get the keyswitch apart, I don't know how to verbally describe > > everything clearly. I made a video > > > > https://youtu.be/n_oyDYRDYzs <https://youtu.be/n_oyDYRDYzs> > > > > > > bkw > > > > On Sun, Mar 17, 2024, 10:47 PM Ronald Hudson <hudson...@live.com > > <mailto:hudson...@live.com>> wrote: > > > > Hi Everyone-- > > > > > > My 102 has a failed "," key - all the other keys seem to work so > > I am > > guessing it is a bad key or broken trace. > > > > What say ye? > > > > > > Thanks! > > > > Ron. > > > > -- > bkw > >
