Re: Apple IIgs motherboard problem

[Rubywand <rubywand@swbell.net>]

Roughana writes ...
> 
> I have a IIgs Rom 01 motherboard that doesnt startup properly.
> When I turn it on, the screen comes up with a grey border, alternate
> vertical columns of black and green/purple/white lo-res blocks and the
> speaker clicks. Pressing Ctrl-OA[or CA]-Reset seems to be registered
> but the cycle continues.
> 
> There is nothing plugged into the motherboard besides the monitor,
> keyboard and power supply. I have checked that these three components
> work fine with other motherboards.
> 
> Any ideas what the possible problem is how to fix it?
> 
 ....

     You could check to make sure that the clicking is coming from the
speaker. If it is coming from the power supply, that would indicate
that the power supply is overloaded and/or defective.

     A pretty good fix procedure is to pull the power supply and give
the board a good dusting. Then scootch up and resocket each socketed IC
on the board. (You can use a large needle to scootch up the square IC's
at the corners.)  This should reestablish good contacts and may eliminate
problems.


Rubywand