[comp.sys.atari.st] ST hardware reset problems

Z4648252@SFAUSTIN.BITNET (Z4648252) (09/16/89)

    A few days back, I posted a note about a Mega which no longer
reset via the reset button, or when switching monitors with a monitor
switcher.  It also would not go on-line when power was applied yet
would come up when the power switch was turned off and then turned
back on.
    I received a few comments about this and was surprised that
there are many STs experiencing the same problem.  The following
are portions of a few letters which I received:

----------
    I saw your article in comp.sys.atari.st about your friend's
    Mega acting strangely, mainly turning it off and back on
    rapidly to start it up.  Well, I have a 1040 that does the
    same thing.  Turning it off and back on in the space of about
    two seconds is the only way to boot it, and the reset button
    doesn't work.  It seemed to gradually happen with mine, but
    would get the worst when the ST was hot.
-----------
    Hee hee hee.  A 520 that I bought used at a garage
    sale had the same problem.  I bought it for $100.00
    and replaced the 68000 chip.  Works perfectly!!!
    You might try that.
-----------
    My 1040ST does that!  I thought that it might be
    my reset button not working but don't understand
    why.....I have to turn [the power switch] on and
    off several times to make the computer work. Could
    it be the power supply?  The color monitor comes
    on with a white screen when the thing doesn't
    work.  When I turn it on and off several times, it
    finally wakes up.  My solution is to not turn the
    computer off and use a cold boot program so that
    I can play copy protected games and stuff.
-----------

    Another helpful STer wrote and gave a theory of the
reset process on the ST.  He felt that either the GLUE
or the 68000 chip was bad.  He also said that holding the
reset button in for a long time could bring either chip
down.
    If anyone else has comments on this, I'll be glad to
sum them up.

Larry Rymal:  |East Texas Atari 68NNNers| <Z4648252@SFAUSTIN.BITNET>