*says in his best Keanu Reeves voice* Arizona Wildcats.... (i'm sorry - I saw that and immediately thought of that scene in the movie "Speed")

Some of these are hiding behind my commemorative copy of the University of Arizona's Daily Wildcat from when UofA won the NCAA title. Click to expand... I still have the T-Shir…

I just found a great link to new Mustang pics: http://www.flickr.com/groups/apple_prototypes/pool/49628751@N00/ Brutally narrowed Google search with some great hits.

I have SUM II on floppies. If anyone wants it, I can image it and upload it somwehere

My SE/30 SCSi problem has been fixed!! The via connecting pin 25 of the SCSI chip to pin 9 of the SWIM chip was corroded by leaked capacitor fluids and was no longer conducting. …

TERMPWR checks out good (+5V) on both the internal and external SCSI connectors. I actually checked it at each of the inductors first and finally at the connectors themselves. I …

if you have no TERMPOWER, that means your fuse or inductor feeding the SCSI bus and/or IC is open circuit. Testing and replacement will bring the bus alive.

Z53C80 and NCR53C80 are the same part from different manufacturers. Often, one manufacturer will license the part from another. In some cases, they develop the part independently…

techknight, If i did my research correctly, I should have seen +5V across pins 24 and 25 of the external DB25 connector if the SCSI bus were working correctly. Unfortunately, I me…

techknight, thanks for weighing in. Your videos were very helpful in getting me rolling, but I'm afraid I'm lacking background information to act on your current suggestion. What…

check to make sure you have termpower at the DB25 connector as well. if not, theres the issue.

ixnay on the ematicschay request. I just realized that zuiko21 gave me the logic board connections for the 53C80 in the link in his response. I thought it was a pix of his board …

Cool. The symptoms were very similar to my problem, but on your board, the software at least detected that something was out there. On mine, SCSIProbe just blinks "SCSI Bus Not T…

That was my board in the video. It would boot up to the question mark, but wouldn't recognize any SCSI devices whatsoever. He fixed the bad connection and it works great now.

Gents, thanks for the quick update. Just got done watching about 4 of TheTechKnight's Youtube videos on resolving SE/30 problems to see if I could learn more. He also had a SCSi …

The link to the 53C80 datasheet has changed from to http://www.prismnet.com/~trag/DataSheet/Z53C80.pdf Basically, anywhere I ever used io.com, it is now prismnet.com. I wish I …

Hi! It's the DB2 line, between pin 39 on the 53C80 chip (the uppermost pin on the right side) and pin 6 on the IDC-50 internal SCSI connector. It's also connected to pin 22 on the…

zuiko21, Which connection was broken? The problem you encountered is VERY similar to what I'm trying to resolve on my newly recapped SE/30 (my system reports that the SCSI Bus is…

Hm. I have a post September 10th 128k-model board in my Macintosh 128k (but with an original Macintosh rear bucket), Apple branded RAM chips, stock 128k amount even, not a single c…

Hi, since I'm currently unable to edit the Wiki I have decided to continue my programming guide on Google Sites temporarily until the wiki is fixed. The start of the tutorial is h…

Phreakout - any updates on my board? You've had it a LONG time.

Finally.... MISSION COMPLETED!!!!!!!!!!!!!!!!!!!!!!!!! Got a 80GB 5400RPM HDD today to replace the problematic 10GB HDD in the iBook. After spending all afternoon taking the HDD o…

Just for a minor additional note of clarification, I was genuinely puzzled if "MFS Support" was something you were explicitly looking for. Presumably a Mac hard disk which *did* wo…

Confused myself, I meant non-SCSI drive like the serial MacBottom, was probably thinking MFM (correctly or not) having previously written MFS. Not that clarification isn't importa…

Though the fact it distinguishes between the SCSI and non-SCSI HD20 is a good indication it understands MFS. Click to expand... Minor nit: What does MFS have to do with the HD2…