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Need to take a look at this 3D model as I just noticed the notch is offset inverse to the mockup I made.

I made an insert for a Quantum Maverick: https://68kmla.org/bb/threads/quantum-hard-drives-which-models-can-be-reasonably-fixed.43345/post-586805 You don’t need to remove platters or remove the melted bumper with this solution.

Ah, you see, I’m not that well versed with New World PPC hardware. That makes sense – I/O is usually in the southbridge.

If anyone wants to try, I've attached the driver that 'CreateMac' (the Korean site that claimed they got USB 2.0 working) originally hosted, thanks to the Internet Archive. Double clicking the image file fails with an error saying that it's corrupt on my M1 Macbook Pro. Reading some forum posts...

NEC µPD720101 datasheet is available here. Looks like the chip is on the underside of the board – I'm surprised having it so far away from the ports would be at all optimal. The FW400 logic board appears to have an unpopulated BGA footprint in that location, so could likely accept a USB 2.0...

Is this a FW800 board? Worth investigating if it's hardware, firmware or software that's preventing it from running at USB 2.0 speeds. If it's hardware then maybe there's an empty resistor footprint that can be populated/removed to enable this. I suggest reading the datasheet.

Haha, how did you manage that? You can never have too many compacts. Isn’t that like the first rule of the ‘MLA?

IMHO recapping the AB is an essential starting point before delving into further issues. When the horizontal rolling distortion appears, does carefully pushing against any of the AB connectors (with something plastic like a pen or pointy spudger), make it go away? When I pushed on my yoke...

This is quite interesting. Sort of implied Apple held off on USB 2.0 support to avoid stealing Firewire’s thunder. Seems silly in hindsight. @Durosity I thought the PowerMac G5 was the first model to support USB 2.0 officially.

I approve. OP should use loads of flux and ideally a board preheater to heat it to the point that you can push the chip out of position with tweezers, observing it spring back into position. This proves that the balls have become molten but due to surface tension (I guess) will retain their ball...

I have seen exactly this issue on one of my SE/30s even after recapping the analog board. IME the rolling distortion (rows of pixels that jitter left and right, as in your videos) is a separate issue from the disk access interference. I fixed the rolling distortion by reflowing the yoke...

It’s certainly not conventional. But if it works, it works. I don’t fully understand what you mean sorry. I agree. Also, there are various types of low melt solder (chipquik smd1 being the most well known) and I recommend it highly. You flood the pins with the stuff and then you can remove...

The IIcx ROM was older generation, whereas the IIsi was a newer universal ROM, so it was expanded. Apple doubled the size of the ROM several times between 1986 and 1998, eventually ending up with 4MB ROMs.

Yeah, I know about the input being in the glovebox, I was wondering where the cable connected on the other (output) end. And how you would tell the car to play the iPod through the car speakers.

So did this cable plug into the back of the Symphony/Concert entertainment system? How would you access it? On mine I fitted a bluetooth module which uses the 'CDC' mode, normally reserved for a CD changer in the boot (but not really needed since the entertainment system has a 6-CD changer right...

I thought they sorted out most of the issues with the B7. We still have a B6 Sedan from 2001. I managed to get on top of most of the persistent issues, the worst one was rainwater collecting in the driver’s footwell, which in turn created humidity which corroded the connector to the ECU.

It will need more than a recap, the board will need cleaning from electrolyte and potentially repair to damaged traces. Textbook failed caps on these is no sound, that’s it, anything else requires further work to diagnose and repair. Recapping is often just a starting point. If you’re lucky...

A great car – is that a B6 chassis? You should do an archival report for it as well.

Yes. There's really no reason to go higher than 7.5.5. Many are happiest on 7.1 whilst some even prefer 6.0.x.

Yes. You can install Mac OS 8’s Appearance Manager extension to get the platinum look under System 7.