did that picture i sent you help at all?
Charles MacCaps.com On Nov 12, 2013, at 12:49 AM, Scott Lawrence wrote: > Okay. For the heck of it, I re-buzzed these two traces, and lo-and-behold... > the SCSI DMA line was not connected to the GLUE chip. One wire-wrap-wire > soldered into place, and Bammo... it booted from the SCSI drive! HUZZAH! > > Now, it seems to have power glitches, so I suppose I need to recap the > analog/power board too. heh. > > Thanks to all of you again for helping me track this down, and to get > reacquainted with an old friend! > > -s > > On Saturday, November 9, 2013 9:50:07 AM UTC-5, Notgoing Totellyou wrote: > check continuity between these 2 traces > if you don't get any, then run patch wires as seen here. > and then your scsi will probably work. > > http://68kmla.org/forums/download/file.php?id=5438&mode=view > http://68kmla.org/forums/download/file.php?id=5439&mode=view > http://68kmla.org/forums/download/file.php?id=5440&mode=view > > SE/30 has issues with leaking cap goo, causing via and trace rot. > so i would check lines going too the scsi chip before you assume its the > scsi I/C is bad. > > SE30 Schematics.zip > > > > Charles > MacCaps.com > > > > On Nov 9, 2013, at 8:10 AM, J.S. Garrison wrote: > >> That's why I mentioned going with either another, newer Mac that takes a >> SCSI drive, or the Pentium II or III PC with the advantage of being able to >> use the bootable CD of MHDD and the Adaptec SCSI (50 pin) Card. I have also >> used an external SCSI CD ROM case, plugging in the hard drive in place of >> the CD ROM. >> >> Once you've acertained that the physical parts are not damaged, (SCSI >> cable, motherboard socket pins, hard drive pins, seeing that terminators >> (hard drive, not external drive case/internal motherboard) are present, what >> you're left with is the software problem with the hard drive's formatting. >> >> I don't trust, so I don't depend on, Apple's Drive Setup. I do trust >> Silverlining for it's seldom-fail drive prep ability. Lido 7.5.6 too. MHDD >> in a PC too because it, with the right Adaptec card, will positively find >> and prep a drive, unless it's controller card >> is fried or the jumpers are wrongly set or missing. >> >> Most hard drive makers, or third party collectors/repair people will have >> settings info online. Google is your friend there. >> >> Yes, I'm advocating the purchase of a second, newer Mac or the P2/P3 PC and >> Adaptec Card. Mac Collecting can be a >> costly hobby. But without the right tools you get more dead ends and >> frustration than you need to in diagnosing a problem >> that keeps your Mac from, in your case, seeing the hard drive. >> >> And maybe there IS a problem with the SCSI chip on the motherboard. But when >> I did a lot of refurbising, this was never the case. >> >> Jeff >> >> >> From: Scott Lawrence <yor...@gmail.com> >> To: vintag...@googlegroups.com >> Cc: J.S. Garrison <garri...@yahoo.com> >> Sent: Friday, November 8, 2013 8:21 PM >> Subject: Re: SE30 SCSI Repair Questions >> >> Well, like I said, I know the drive, scsi cable, power supply are all good, >> since I have my SE board in that case right now, running System 7.1 off of a >> 340 meg hard disk. (Which I installed using that SE/30 before it failed.) >> >> I'd love to try out those formatting tools, but I can't get the machine to >> see any device on the SCSI chain. HDSC setup and the hacked version of HDSC >> setup both claim that the scsi chain is not terminated. >> >> It's not that the drive isn't formatted, it's got a working install of OS >> 7.1. It's just not visible with the SE/30 board. >> >> -s >> >> On Friday, November 8, 2013 10:08:36 PM UTC-5, The Old Geek wrote: >> ccee >> The method I used is, with a known-working internal and external floppy >> drive, is boot a system 6.0.8. disk find and use the Micromat system 6 >> removable and internal disk utility. >> >> Another, easier to find utility is the usually fail-proof La CieSilverlining >> which I will use in a bootable System 7.5 environment. If that drive is >> mountable, the La Cie utility will "indoctrinate" it to a mounted condition. >> >> Many folks don't like Silverlining because of the problems it manifested in >> System 7. But it, along with Lido 7.5.6, which wants system 7.1 to OS8.x to >> work, almost always, for me anyway, made a rogue hard disk appear on the >> desktop. >> >> I want to be absolutely sure that the hard drive isn't bad so I look at the >> SCSI cable, motherboard connector and drive connector conditions (i.e bent >> or missing pins), and potentially missing terminators on the hard drive's >> controller board. I look at drive-controller jumpers and use Google to see >> if these are set correctly (from the maufacturer's site or other trusted >> sites). >> >> To foolproof my testing, I will connect the drive to an Adaptec SCSI Card in >> a Pentium II or III PC and run MHDD, which is a bootable Linux-based CD that >> checks sectors for condition, and can repair damaged sectors software-wise, >> AND format the drive with MHDD. >> >> This opens the door for the La CieSilverlining to take charge and make a >> working drive Mac-accessible, IF it's not toast. >> >> Jeff >> >> >> >> From: Scott Lawrence <yor...@gmail.com> >> To: vintag...@googlegroups.com >> Sent: Friday, November 8, 2013 4:27 PM >> Subject: Re: SE30 SCSI Repair Questions >> >> Yes. The drive is running. It does it's startup seek, same as if it were >> unplugged or when it was plugged into the SE motherboard. It takes it a few >> moments then it shows the ? Mac icon. >> >> >> -- >> -- >> ----- >> You received this message because you are a member of the Vintage Macs group. >> The list FAQ is at http://lowendmac.com/lists/ vintagemacs.shtml and our >> netiquette guide is at http://www.lowendmac.com/ lists/netiquette.shtml >> To post to this group, send email to vintag...@googlegroups.com >> To leave this group, send email to vintage-macs+unsub...@ googlegroups.com >> For more options, visit this group at http://groups.google.com/ >> group/vintage-macs >> >> Support for older Macs: http://lowendmac.com/services/ >> --- >> You received this message because you are subscribed to the Google Groups >> "Vintage Macs" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to vintage-macs+unsub...@ googlegroups.com. >> For more options, visit https://groups.google.com/ groups/opt_out. >> >> >> >> -- >> -- >> ----- >> You received this message because you are a member of the Vintage Macs group. >> The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our >> netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml >> To post to this group, send email to vintag...@googlegroups.com >> To leave this group, send email to vintage-macs...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/vintage-macs >> >> Support for older Macs: http://lowendmac.com/services/ >> --- >> You received this message because you are subscribed to the Google Groups >> "Vintage Macs" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to vintage-macs...@googlegroups.com. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> >> -- >> -- >> ----- >> You received this message because you are a member of the Vintage Macs group. >> The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our >> netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml >> To post to this group, send email to vintag...@googlegroups.com >> To leave this group, send email to vintage-macs...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/vintage-macs >> >> Support for older Macs: http://lowendmac.com/services/ >> --- >> You received this message because you are subscribed to the Google Groups >> "Vintage Macs" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to vintage-macs...@googlegroups.com. >> For more options, visit https://groups.google.com/groups/opt_out. > > > -- > -- > ----- > You received this message because you are a member of the Vintage Macs group. > The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our > netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to vintage-macs@googlegroups.com > To leave this group, send email to vintage-macs+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/vintage-macs > > Support for older Macs: http://lowendmac.com/services/ > --- > You received this message because you are subscribed to the Google Groups > "Vintage Macs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to vintage-macs+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. -- -- ----- You received this message because you are a member of the Vintage Macs group. 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