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Yup, they're ready to go ROM chips. I'll reach out in the next few days (or earlier).

Okay, here's the tutorial — feel free to leave feedback or ask questions in the comments on Instructables or here. I'm giving away 3 sets of ROMs (just pay shipping!) Please post in here if you're interested and I'll reach out to qualifying parties to get your mailing information 

Something incredible happened today — it wasn't that my chips finally arrived (I guess I can scratch out my "ONE Apus" theory)... and it wasn't that the chips were actually good... the incredible thing is that everything worked on the first try. I'll be publishing the tutorial in a few days!

I'm beginning to believe my order may have been aboard the ONE Apus.  xx(  Still no chips...

Yup, I'm interested too. I may be close by depending on where you live — I'm across the bridge in North Bay.

I took a few days away from this — the replacements parts removed the click but now I get nothing at all! I'm including my list of replacements if it's of any help; the purchases were based on common problems from the dead mac scrolls and their modern equivalents. If someone is more experience...

Just emphasizing this — I don't have a lot of experience with replacing ram chips, but if I learned anything from watching Adrian's Digital Basement, it's that ram chips fail very often (even new chips!)

Thanks for the tip, I'll check it out. Anyone have concerns about using this rectifier (1N4937GP-E3/54) as a replacement? I saw it mentioned on jagshouse.com. 

A few months ago I bought an analog board (PN: 630-0102-J) knowing it did not work. I was hoping it could be resolved with a good cleaning, fresh caps, and maybe some reflowed solder joints but alas — here I am. I have replaced all of the caps I have reflowed all of the solder joints (yes...

I like this idea, though I'm not sure I would do it — I would prefer a more pristine look. Going after the pristine look... it could be tricky to find an epoxy that bonds strongly but that is what I would start with. You could try to level out the pry marks (or even cut them a bit below the...

I had a little learning curve figuring out the best chip as a modern ROM replacement. I got close and some friendly Redditors helped me figure out the best options. I have a few chips on order from China and expect them in a few weeks. Once I receive them I’ll be documenting the process and...

Taking everyone’s advice, I cancelled the PICKIT3 (I realized my mistake) and purchased a TL866II Plus.    If I can get this working then the community can expect a new source of programmed ROM chips for much less than the $30 on eBay - it’s predatory and not in the spirit nor best interest of...

As a point of clarification, I have already confirmed the ROMs are fubar. That being said, I'm tempted to solder the fubar ROM directly to some header and re-testing; it could be corrosion damage on the legs... franken-rom  :evil: Thank you!

Super useful resources, thank you! I had been looking at that but I don't really want to hotrod my Macintosh Plus'. Appreciate the suggestion though

That's a great starting point — thank you! Once the pickit3 arrives I'll try out flashrom. If anyone else has experience or suggestion they would like to share it would be warmly welcome!

The good news — the Macintosh Plus logic board (and the spare I purchased prior to this cursed plus) are good! The bad news — both of the motherboards have faulty ROM chips. I am fortunate in that I have a working Macintosh Plus and the audacity to remove my working ROMs and test them in...

The same thought crossed my mind while I searched for more information about them. Sounds like the best recommendation right now is to buy replacement ram? Thanks for including the additional information (reference guide, calculation and example). I tried a bunch of iterations but the only...

The individual sticks have 8 "TMS 4256FML" chips. If the "256" is of any significance, wouldn't that put these sticks at 2mb each? edit: tried it — no change

Hello, I purchased this Macintosh Plus knowing there was some Bad Things™ going on. I describe the steps I've taken below but I need suggestions from more experienced folks. Before we begin, I want to point out that I did not recap the logic or analog board — they appear pristine. I've recapped...

I pulled out a case screw from my color classic, they appear to be a pan head T15 M4 x 1.75 x 16: Diameter of the head of the screw is 7.8mm The fastener uses a T15 (Torx) The nominal diameter of the thread is 4.09 mm The thread pitch is 1.75mm The threaded length is 16mm long...