Search results

Two questions: Classic or Classic II?  I couldn't tell from the video. What version of System is that?  I want to say 7.0.1 but I may be wrong.  The question then would be if later Macs suffer from similar issues.

There is no video RAM inserted at all, and I don't have an external video card to test with.  I've done a fresh PRAM and CUDA reset as of this post, and still no change in the board's behavior.

Capacitor issues around the audio DAC chips in anything from the II, LC, or (Color) Classic series' usually results in dead, or very faint, sound.  That would be my first suspect too. To test it out, you can first desolder and replace the caps around the TI amp/dac chip, which should be...

ROMs are not socketed, it appears to be some kind of single chip, like a PLCC or something to that effect.  I don't know which it would be, there are no DIP chips on the board. And I think I mis-wrote that post: I tried Apple Hardware Test and it wouldn't boot, but then tried a separate...

Results: I couldn't get the Apple Hardware Test to boot, but I could get it to run TechTool Pro to run on it, which upon attempting a full test of hardware, crashed immediately upon testing the L1 cache. I swapped out the CPU, got the same result, though a markedly faster boot time.   I...

I've tried every stick individually to no effect.  The contacts have been cleaned.  I'll try an actual RAM test next.

Troubleshooting advice would help too, but I am fairly certain I have a PM G3 beige minitower that is on its way out.  Fresh PRAM battery, all expansions removed, minimal system connected (with the exception of a SATA card later on).  Power supply voltages are golden, within 10% or less of the...

I wasn't aware of these... but now I'm tempted to try them.  I think the biggest issue with these might be that you have to find a short enough SCSI cable to accommodate it, because the v5 only fits horizontally into the bay, rather than vertically, and the laptop's own ribbon cable cannot be...

Oh, hey, this actually garnered interest! So the first run I ended up accidentally orienting the plug incorrectly and--if I hadn't noticed sooner--would have almost fried my v5 SCSI2SD.  It's my mistake because I think I expected the mini-scsi connector to be oriented one way when sketching...

Excellent!  Thank you for the insight.  Whatever I end up sticking with I'll make sure the 64k ROMs remain safe as those seem to be the more valuable piece between the two.

I have an original 512K and I'd like to see if it's possible to get it up to 512Ke standards (800K floppies, etc). Would I need to simply transplant Plus or Ke ROMs into the 512K, or is there more involved?  Furthermore, is it even possible/practical?

I did end up finding this thread: http://www.oldschooldaw.com/forums/index.php?topic=433.0 I've composed a Windows 98 bootdisk, attached below, as a 1.44mb floppy image, with the firmware onboard. I will try it when it arrives, and if not, no harm done.  These cards are common enough, and I...

I've got a PB3112SATA150 card coming in the mail.  I've read on here that it's possible to flash the chipset to be bootable in the Beige minitower G3 but I have no idea where to begin/what to search on how to go about doing this. Anyone have a link/guide/pointers on how to do this?  I have a...

Absolutely.  As I said in PM, I'm building two variants and I want to see which one fits more snugly--SCSI2SD beneath it or above it.  They are cheap to produce individually ($.50 per board, $3 for the connectors) and will likely be dirt cheap in bulk. The one I have posted here so far fits...

The first batch has arrived!  I'm about to head off for Christmas but I'm going to order the parts from DigiKey or Mouser in my absence and they should be there by the time I get home. It fits snugly in less than the size of a PB-SCSI hard drive, leaving just enough overhang for the SCSI2SD v5...

Yep, mine actually sits underneath the SCSI2SD which may imply needing insulation between the SCSI2SD board and the breakout board. Any stick-on foam pads should do the trick. Absolutely open, under the CERN Open Hardware license.  Gerber files attached below, untested as of yet. I have tried...

While I'm aware that the Powerbook edition of the SCSI2SD does indeed exist, they can only be manufactured in limited runs due to their design being in significantly lower demand than your run-of-the-mill SCSI2SD, per a conversation I had with Interial via PM.  To this end, I took it upon myself...

I'm working on the assumption that your 128k is not a 512k upgrade and that it doesn't have socketed chips.  Now would be a good time to install sockets if you suspect more RAM may fail in the future. I also assume that the RAM is addressed sequentially.  If the chips are interlaced (i.e. chip...

Okay, confirming here that installing four 256K SIMMs and replacing R8 did, in fact, permit it to boot, indicating this is an issue with the RAM I was using. All of these RAM sticks have tested good in the past using an old build of memtest on a 486 motherboard, so it's not necessarily that...

IIsi has considerably easier caps to replace than, say, the IIci or IIcx.  The caps for the audio filter circuit are in the northwest corner of the board (if 'north' is where all the rear ports stick out).  If replacing those fixes your audio issue, you know the caps were bad.