From: jeffh@ludwig.cc.uoregon.edu (Jeff Hite )
Subject: Re: Mac Plus is constantly rebooting!
Article-I.D.: pith.1qk7nu$ra8
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In article <C5Hsyu.Dxq@hpuerca.atl.hp.com> russ@hpuerca.atl.hp.com (Russ  
Hodes) writes:
> Tae Shin (tshin@husc8.harvard.edu) wrote:
> : 
> : Basically, the Mac Pluses are constantly rebooting themselves, as if  
the
> : reboot button were being pushed.  Sometimes the Mac is able to fully  
boot
> : and display the desktop, but it is only a matter of time before it  
reboots
> : again.  At times, the frequency is as high as several times a minute. 
> : 
>    I wonder if your Mac has those little "RESET / INTERUPT" switches
>    installed.  They are plastic devices that push on the switches which
>    are inside the mac.  Or mabey those switches are bad and need
>    replacing.

This problem is usually a low +5 Vdc from the power supply, there is an  
adjustment for this on the supply. If the voltage is still unstable or low  
then the culprit is probably a bad rectifier at CR20.

Jeff Hite
Computing Center
U of Oregon
jeffh@ludwig.cc.uoregon.edu
