often keyboard tracks can break. if you check every key and note the ones that don't work (maybe there are more) often it is a whole row or column on the keyboard matrix.
that helps to find the dead track. otherwise it can be dirty key switches. T200 key switchs can be cleaned. ..Steve On Fri, Dec 18, 2015 at 6:49 PM, John Martin <[email protected]> wrote: > Hello M100 list subscribers. > > I have a Tandy 200 portable computer. It use top work fine. But after not > using it for about 6 months. > I have these problems. > > 1. The batteries died and leaked acid on the battery posts. > > 2. The keyboard use to work OK. But for some reason, only the left, > right, up and down arrows work and the space bar. All keys use to work > before. > > 3. The Tandy turns ON and OFF ok. The LCD screen is OK > > 4. I did check the internal nicad battery. It is not dead. > > 5. I turned OFF the memory switch on the bottom of the T200. Then turned > it back on after 1 hour later. Plugged in my AC power cord into the M100 > for 2 days. > > I am still having the issue with the keyboard not working properly. I > check the cable that connects from the keyboard to the mother board. It is > OK and no damage or corrosion. > > I do not know what else to do. Any suggestions? > > John M. >
