I had a similiar problem with my Apple Macintosh SE/30, It was easily fixed by replacing the chip capacitors on the motherboard.
Reference : http://www.biwa.ne.jp/~shamada/fullmac/repairEng.html#SimasiMac I replaced ALL of the chip capacitors (C1,C3,C4,C5,C7,C8,C9,C10,C12,C13 & C6 ) with new Electrolytic Type chip capacitors (47uf 16v & 1uf 50v respectively). I obtained my chip capacitors from RS Components Ltd (www.rswww.com), the specification of which are as follows ; RS Stock No qty Description 108-340 1 Capacitor,electrolytic,aluminium,SMT,85degC 50v,1uf 108-211 10 Capacitor,electrolytic,aluminium,SMT,85degC 16v,47uf Since there is a min order qty with RS, you will need to purchase 5x 108-340. A word of warning when removing the old chip capacitor with snippers, since it is very easy to lift the tracking on the motherboard. Luckily I had an Old Apple Macintosh IIci motherboard - which was non operational, so practised on this one - prior to attempting to perform this on my Apple Macintosh SE/30. Also the Apple Macintosh SE/30 motherboard is more cramped with components & less easy to work with than the Apple IIci motherboard. Removing the old chip capacitors is not for the faint hearted & allow loads of time to perform the task. Best of Luck, Hope I have been of help. Geraint >Ever since I connected a 500Mb Quantum hard disk to my Mac SE/30, it has >stopped working. Now, when I switch it on, it makes no sound and the screen >shows a pattern of black and white horizontal stripes, eight pixels wide, >which >doesn't clear to show the insert disk prompt. > >I've checked all the cables, tried swapping the hard disk and the RAM SIMMs >around, tried leaving the power disconnected for a minute (this sometimes >helps to clear the memory) and tried removing the clock battery. None of this >has helped. > >Does anyone have a copy of The Dead Mac Scrolls, by Larry Pina? Could >someone help me diagnose this problem? > >-- >Compact Macs is sponsored by <http://lowendmac.com/>. > > Support Low End Mac <http://lowendmac.com/lists/support.html> > >Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> > --> AOL users, remove "mailto:"; >Send list messages to: <mailto:[email protected]> >To unsubscribe, email: <mailto:[EMAIL PROTECTED]> >For digest mode, email: <mailto:[EMAIL PROTECTED]> >Subscription questions: <mailto:[EMAIL PROTECTED]> >Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> > > >--------------------------------------------------------------- >iPod Accessories for Less >at 1-800-iPOD.COM >Fast Delivery, Low Price, Good Deal >www.1800ipod.com >--------------------------------------------------------------- ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com -- Compact Macs is sponsored by <http://lowendmac.com/>. Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> --------------------------------------------------------------- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---------------------------------------------------------------
