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I started working on this one today. The power button does trigger the power on circuit and voltages at the MLB PSU connector are all okay. The caps were quite crusty as well as a couple of the serial ICs and U48 which looks like it might deal with reset. I cleaned up all of that. Just need to...

A couple of years ago I bought a $50 pair of hot tweezers from Amazon. They were very difficult to align / keep in alignment and didn’t have good heat control. After upgrading my solder station to a Metcal MX-500, I bought a set of their tweezers. They were about $300 new which is obviously a...

Very cool! I recently just got a couple of Jaz drives and a stack of disks. Will give this a shot to test them out.

Does that mean you're looking into designing a modern SCSI/IDE bridge? If you need a drive, I can send one to you.

Do you have an ESR meter? That would help you test for caps that are actually out of spec instead of replacing all of them prophylactically.

I’ve had trouble with too-small needles shipped with AmTech tubes. the biggest issue for me is it was way too hard to compress the syringe. My hands would ache for a day or so after use. Replacing with a larger diameter needle solved my problems.

I just watched @This Does Not Compute 's video on the PowerBook 540c and was curious about the SCSI-IDE bridge on the upgraded HDD. That seems like a possibly good solution to retain a mechanical drive without spending a lot of money on a SCSI drive. Especially so for 2.5" drives. Is there an...

Might it be feasible to use modern DRAM with some additional refresh logic tacked on?

Awesome. @MacEffects any plans to make more of these?

Did you use conductive paint for the frame? If not, what’s your plan To ground it?

Has anyone made a reproduction RAM upgrade card for the Mac Portable? I’m cu how much of an undertaking that would be. It has a 90° connector but I think it’s something somewhat standard. Is there anything else unique about it compared to other Mac RAM modules?

Very cute. Where's the drawing showing a cap exploding from too much hot air? :-D

I restored a Lisa 2 last year, which is now in very nice condition, but it didn't come with any accessories or manuals. Yesterday a friend gave me an unopened copy of the original owner's guide and a complete in box Lisa Draw. It has the original twiggy disk. So cool! Hopefully I can find the...

Nice I didn’t know there were Bomarc drawings for this model.

No I don't have much more info than that. And my experience on the Color Classic might not apply here.. was just a thought. What is U12? I wonder if that might be involved too since it gets more exposed to C27 goo and is connected to the CUDA.

Bummer. Did you check and/or swap the CUDA chip? IIRC from my brief cleanup, it's near one of the caps and looked a little crusty on mine. I've had similar symptoms on Color Classics that ended up being issues with crud under the CUDA, a dead chip or a problem with the nearby crystal.

Thanks! I didn't leave it on long enough to notice the PSU temp. Are you getting the right voltage out of your PSU? Did you try swapping in one from another model like an 8100?

There are also dedicated board preheaters too. I recently got one and it’s been helpful in reducing time applying much higher heat. One of the benefits of the Metcal solder stations is that you get constant perfect temp even on big ground planes without needing to adjust anything. It’s been...

On the FX888 I used 350-370 for most tasks. Im using a Metcal MX500 now which doesn’t have heat adjustment. I’m using their 370° cartridges which have worked very well. As Bruce’s post indicates, your ideal temp may differ due to the iron and work youre doing along with your own preferences. As...

I bit the bullet and opened it up. Fortunately nothing broke. The battery was fine and the caps have leaked a bit but not terribly. I cleaned up the caps and surrounding areas with cotton buds and IPA for now since my 'lab' is being remodeled at the moment and I don't have easy access to tools...