Recent content by unity

Thats the issue, too often these machines end up on other projects and stuff gets swapped. I have a few IIcx prototypes. One was 100% original with an Avanti motherboard. But a couple others, including one I still have, was hard to be 100% certain about. One fore sure was a PVT case but a...

So it is like our cases are reversed. Your board appears to be more DVT not PVT in a PVT case. Because the ROM is socketed. Yet it is in -04 board, which I also have one hand but it has soldered ROMs and is def a production unit. My board could be PVT but in a DVT case. Also the EGRET on mine...

A bit of thread necro here... but wondering if you have an pics of the back of the case? I currently have a DVT IIsi case w/mobo. The mobo does not appear significantly interesting other then -02 designation with -01 ROMs. The EGRET I will picture below cause there seems to be some fascination...

Looks like at one point a dual slot cover concept was in the works. All that remains is an outline on this case.

I cant find the official PDF or such, if it exists, but this overviews the SE/30 upgrade for the SE and says it does indeed include a new chassis. This would be for the later more official upgrade that would not have stickers to put over any "SE" markings...

Squirrel fan, not drum. Drum is anther style of fan and is actually closer in design to a box fan. The upgrade did not include the rear bucket and power supply (being separate from analog/sweep), but it may very well have had a new chassis for the very reason of upgrades. But the end user may...

Yup, SE upgraded to an SE/30 which includes a new face plate, rear label and logic board. Some very early kits had an SE/30 label to stick over the SE badge print. The serial on back, however, will still point to an SE. That is the quickest way to ID an upgrade.

I mean if it worn I guess I would not worry about damaging it.

Is the upper pressure pad missing? It attaches at the tip of the arm and sits opposite the drive head. If this is missing, the drives rarely work properly if at all. And you do need the correct ribbon, not all ribbon cables are the same.

Did you reflow the critical solder joints on this machine? There are several on the analog board but people often overlook the logic. It needs a reflow too at the connector. There is a chance that you have a cold joint causing the audio issue. So I would reflow the connector just to rule it out.

They can be for collectors, not hobbyists. They are an odd one because it is the only production variation made with a Mac 128k and there were limited number. They also are all week 5 or 6, making them pretty early in the production of original Macs. It is just hard finding one truly all...

The only value is in being early, not in the error because even with the error the date of production can be determined. If there were other keyboards made at the same time without the date error, then maybe an ever so slight advantage in value? But I don't know of any with the correct date...

It is a week 1 of 1984. It is known that the super early serials were botched. Someone forgot to change the year from a 3 to a 4. I have several of these on hand that go with very early 128k made in the first couple weeks of 1984. Super early ones, before the serial was standardized to what we...

There were numerous fab plants that proceeds the boards for Apple. And they were located all over the world. Most have a branding for the factory that made them in the copper etch.