Re: IIgs playing funny buggers

[orion@chaven.com (Andy Dreier)]

Richard Opolski (ropolsk@box.net.au) wrote:
: alelee@praetor.hna.com.au (Alex Lee) wrote:
:  
:  >My IIgs is starting to frighten me.  For some unexplained reason,
:  >seemingly random, the keyboard will chuck a major spaz.  Either it
: simply
:  >doesn't allow input from the keyboard (even including a reset!) or the
: GS
:  >receives waves upon waves of the same character.  Interestingly, when
: I
:  >disconnect the keyboard, the waves and waves of the same character
:  >continue, even when the keyboard is then reconnected to the ADB.
: Pressing
:  >another key seems to stop it (after disconnecting and reconnecting).
:  >Also, if the keyboard seems to do nothing, the mouse still works
: perfectly.
:  
: I also had problems with my keyboard but I found out that it was a
: problem with my power supply overheating which was causing my keyboard
: to do funny things.  Anyway I cured my problem by installing a fan on
: the power supply which gets me through the summers.  The long term
: solution is to replace the old electrolytic capacitors in the power
: supply as they dry up and loose their effectiveness.

I have also had this problem, but it was due to a defect with the original
keyboards which were sold with GSes; because of an improper design, the
solder connections have unwanted stress applied to them, which can cause
them to break. The solution to this proble mis simply to re-solder the
connector.
 When this happens, it can cause random garbage characters to appear on your
screen, (which sometimes do not go away after you unplug the keyboard) and 
also trouble with the mouse.