Recent content by dschnur

A little late, but better than never. I just bought a Quadra 950 that came with a Precision Color 8-24X and it had ROM v 1.3.1. See attached, it's still a 27c256.

Ouch! I can see why. At least it's easy to fix. Attached images are some of the trace repairs I had to do on my system. After this, I scraped more rot from other traces and tinned them to protect what copper remained. I'll eventually clean it up the rest of the way and hit it with a...

UB2 on mine had the same damage as yours, though yours was a little further on. Mine also had the typical damage to traces near the battery. I wound up doing a fair bit of microsurgery to fix those and also had to scrape a lot of resist on neighboring traces to remove corrosion, then I tinned...

There are a few common failure modes to aluminum electrolytic capacitors. Heat buildup, over current, age breaking down seals, and poor quality are some of the modes most of us have experienced. That said, there is one failure mode that's not so obvious, and keeping a capacitor in a cool dry...

.01mm magnet wire, lots of flux, and clean solder. You can also just run a jumper wire from the via behind the button to the pin on the chip once it's soldered back in place. Make sure you test from the pads on the audio chip to the destination pads (where ever those may be) to verify the...

One more thing. Make sure the contacts in the audio jack are working. There are slider contacts inside the switch ( you need to remove the switch to get to them ). Those contacts can get gummed up and if they are not working, you have no audio. Try it with something plugged into the jack and...

Check it with a meter. That's the best bet.

For something like this, I normally remove the chips in question, clean the pads, then take a meter and check from pad to via, or from pad to destination pad of another chip. I find that it's pretty common to have a hair line crack right between the pad and the trace. Often they are small...

I thought of that too. You can buy blank keys and they are pretty standard locks. The thing that strikes me most about these is that you can remove the outer ring, then design and 3d print a new one that would fit Quadra series machines. As for wiring, that's pretty basic. If anyone wants...

Out of 6 locks, 2 of their keys worked on my Quadra 950, one was slightly better than the other. So, that gives you a little over 66% against the keys working on your computer if the lock numbers don't match. Sample size is small, so who knows the actual odds. As for re-keying: Here's what I...

I have a contribution to your project: I just bought 6 sets of NOS locks and keys on eBay for the ANS for $6.95 ea + $5.95 shipping and whatever random tax eBay tacks on. One has your name on it. - My cost exactly plus how ever you want it shipped. Also, there should be a key number on the...

I snagged all of them. I'll have extras, but my goal is to rebuild a Quadra 950 lock which is missing they key since these use the same keyways. https://www.ebay.com/itm/297309508268 I'll have extras and you know how much I paid, so if anyone wants one, send me a message. I should have them...

Odd. Ok, I tried it on my mac and it failed. Might have been zip doing it instead of Stuffit. I'll have to beat on it and see if I can replicate the error. That way I'll know what not to do at least.

Odd. I created the archive on a Quadra 950 with System 7.5.3. If it gets extracted on a modern system, it will strip the resource forks from some of the files and make it unable to compile. Not that it matters, I don't expect other people to compile and run it since I just posted it for...

I just released the source to the AMUG Internet Installer (ca 1995) via Macintosh Garden. https://macintoshgarden.org/apps/amug-internet-installer MIT License. Have fun! (Also attached here for archival sake)