[comp.sys.apple] Interrupts and Reboots on II+

myerst%si03.DECnet@ESDVAX.ARPA.UUCP (02/18/87)

                   I N T E R O F F I C E   M E M O R A N D U M

                                        Date:      18-Feb-1987 10:14 
                                        From:      Terry L Myers 
                                        Username:  MYERST 
                                        Dept:      SIOP
                                        Tel No:    5554

TO:  _MAILER!                             ( _DDN[INFO-APPLE@BRL.ARPA] )


Subject: Interrupts and Reboots on II+

For:  Lyman Hurd
Re:   Interrupts and reboots on II+

	I had a similar problem with a II+ a few years ago.  The power 
supply turned out to be very sensitive to voltage dips, and the electric 
heat in my house would sometimes kill me as often as three times in 30 
minutes.  I finally proved it was power fluctuations by borrowing a SOLA 
constant-voltage transformer.  With the transformer, I didn't have any 
problems at all.
	If you can't get your hands on a good transformer, try plugging in 
a lamp on the same outlet with your Apple.  If the lamp dims every time the
Apple crashes, you'll know it's a power problem. 
	If it is a power problem, good luck.  Transformers and UPS's are 
expensive unless you can find one secondhand or build one yourself.  It 
might be better to modify the power supply in the Apple, if someone knows a 
cheap fix.

				Terry Myers
				ESD/SIO
				Hanscom AFB
				(MYERST@ESDVAX.ARPA)

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