Path: utzoo!mnetor!uunet!husc6!bloom-beacon!tut.cis.ohio-state.edu!uwmcsd1!csd4.milw.wisc.edu!neighbor From: neighbor@csd4.milw.wisc.edu (Jeffrey Alan Ding) Newsgroups: comp.sys.apple Subject: Re: baked apples Message-ID: <5755@uwmcsd1.UUCP> Date: 8 May 88 19:33:01 GMT References: <8805052309.AA24541@wpi.local> Sender: daemon@uwmcsd1.UUCP Reply-To: neighbor@csd4.milw.wisc.edu (Jeffrey Alan Ding) Organization: University of Wisconsin-Milwaukee Lines: 33 In article <8805052309.AA24541@wpi.local> MPENDER@WPI.BITNET writes: > >Good luck, but if it comes down to a zapped >motherboard, buy a new one, its not worth the >headaches to try to find the individual broken >resistor or capacitor. > >Mike. > Not worth the trouble? Not worth the trouble? What trouble. One day I turned on my old Apple ][ computer and my cursor was no longer blinking. I thougt that to be very strange. I quickly popped into BASIC and tried displaying some flashing characters. No luck at all. All the flashing was inversed. My flashers didn't work anymore. A quick reading of the old Apple ][ referance manual and an examination of the Apple scematic lead me to the problematic circuit. A 555 timer controls the flashing rate. A capacitor and a resister make up the timing for the 555 timer. What happed was the capacitor went bad. Took me about 15 minutes time and ~.30 cents in parts to fix my computer. And you want to buy a new motherboard??? Sounds like a dealer talking! neighbor@csd4.milw.wisc.edu _______________________________________________________________________________ | arpanet: neighbor@csd4.milw.wisc.edu | | UUCP: ihnp4!uwmcsd1!csd4!neighbor | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~