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I’d keep testing components downstream from that port. Maybe a leaky diode or bad transistor? Also it’d be good to make a post about this on EEVblog forums as well since there are some folks there familiar with repairing Metcal stuff.

Does it do that with any cartridge installed? I had a cart go bad and it would similarly ramp power then say something like “incompatible cartridge”.

It looks like a JST connector of some sort. Maybe XA or one of its variations? You can browse through their wire to board catalog here which is sorted by pitch to find the exact match. https://www.jst-mfg.com/product/index.php?type=2&key=1&page=4

Fo years I've been using a generic 10 liter ultrasonic cleaning tank I got from Amazon. It's been fine, but a little cramped for some boards and its build quality is mediocre. I'd heard of Crest ultrasonic cleaners via Louis Rossman's videos and they seemed to be very well made and performant. I...

Beautiful photoshop work. Check out that hand!

I was recently repairing a backlit portable that does not have a hybrid board. In that area however was RP201 which had multiple rotten legs due to capacitor leakage nearby. Unfortunately, that SOIC resistor pack is custom to Apple, so there's no direct replacement. In my case, grinding back...

That's a noble crusade. We get used to the quirky nature of this stuff, but it can be daunting to someone new to the hobby. Nice work!

That's super handy. The 'What Now?' steps are a nice touch too. Do you plan to have it support any other formats like .hqx?

I recently got a PowerBook 3400 that would chime, then chirp and make some pretty crazy siren type sounds. The sound would go away and the screen would light up if I disconnected the hard drive. I assumed not enough power was getting to the HDD, so recapped the DC-board and MLB (just three caps)...

Nope it didn't leak.

User induced gore since I was curious what was inside of these square batteries.

BTW it looks like the older Blue Ring tester kits are maybe no longer being made. There's a more modern tester based on a microcontroller for sale here, though I can't vouch for that site since I haven't ordered one myself. https://evbesrmeter.pt/ring%20tester.htm YouTube video demonstrating...

What happens if you give it a tap when powered on? If you get a flicker of video maybe you have a broken solder joint. Have you already checked/reflowed the large joints like those on the FBT?

FBT coils cant be tested with a typical multimeter but can be with a ring tester. Search for blue ring tester. There are kits you can build and assembled ones pop up on eBay now and then. It’s not that likely the FBT is bad on your CC though. What’s the symptom You’re experiencing?

Requires 4GB of RAM. Imagine telling that to a Marathon player in 1994 :D

I wonder if there’s a way to reverse the state of brittle plastic. Perhaps heating it for some time just below its melting point would help? Anyone know the chemistry of ABS and other plastics used in these products well enough to know what if anything might help?

If you do need something high wattage and high quality you could go with a classic HP/Agilent/Keysight E364xA. They go up to 400W or so. They’re so common you may be able to find a very cheap broken one and fix It up.

Since there aren't many decent photos of this box online, here you go! There's a lot going on compared to other generations of box designs, but it get's the job done sharing what this beast could do. I also thought it was neat that the blank expansion module came with little flip out PCMCIA...

It's a really lovely setup. Perhaps a museum like System Source would be interested in acquiring it. It'd be so great if it was able to be on a public display. I'll let a friend associated with the museum know about this thread.

@Action Retro i saw your video where you had some problems with the cable. Here’s the pinout of the original cable for the color pivot. Fun video btw :-)