Q840av gets a make over
- Thread starter SophieRose
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@SophieRose can you provide info on the picoPSU. I too have working q840av and q800 I believe both use same PSU. I have been thinking of recapping the PSU. Maybe I will go with picoPSU for longevity.
I like it too - a functional and useful, custom hot-rod!
Its projects like this that have helped me to break out of the restoration-only mindset and start using mods to bring some of my pieces back to life! Great job, SophieRose!
Its projects like this that have helped me to break out of the restoration-only mindset and start using mods to bring some of my pieces back to life! Great job, SophieRose!
And isn't that what it's all about?
The silver looks great.
For those who don't know, this is actually a pretty old hack, at least in certain locations. I've seen several of these types of machines crop up on Buyee (proxy for Yahoo auctions Japan), but usually they are either 650 or 7100 logicboards inside a IIci case.
I made my own as I had a spare 650 board and the IIci case is my favourite. Did exactly the same, cut out the rear ports, and some of the stand offs to make the 650 board fit.
For those who don't know, this is actually a pretty old hack, at least in certain locations. I've seen several of these types of machines crop up on Buyee (proxy for Yahoo auctions Japan), but usually they are either 650 or 7100 logicboards inside a IIci case.
I made my own as I had a spare 650 board and the IIci case is my favourite. Did exactly the same, cut out the rear ports, and some of the stand offs to make the 650 board fit.
I like the cutout solution too. Wouldn’t be hard to 3D print, paint, and glue on a port-specific strip later on, if desired.
I too have a couple of 840av boards waiting to be restored, plus one very battery bombed board and case. So this is interesting.
I too have a couple of 840av boards waiting to be restored, plus one very battery bombed board and case. So this is interesting.
What happens if you remove the jumper?the id is normal 840av as I’ve put a jumper on the led connector
I seem to remember it just ids as a macintosh, could be wrong tho.
Have checked this yesterday while I had my case open and the jumper makes no difference, it IDs as an 840AV (ID 78) either way. Curious.
The 8100 was wired without the ID loop back, the 840av might be the same. Where there isn't a desktop and tower version I guess the ROM doesn't need to know.
The 9600 has the loop - I should check what it thinks it is without, given there isn't a 9600 desktop.
840AV has the loop as well
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On the logic board? I.e. are the middle pins on the male connector wired to anything?
@croissantking - they likely made the LEDs as a standard part, so it is whether the logic board has those pins wired to anything that is the interesting bit - on the 8100 they're not wired to anything, on the Q800 and PM9600, 8600 and various others like the IIvx (!) they are.
Just pulled out my spare board to look. I can't see any traces leading off from the middle pins of J29. It's possible the traces are internal but more likely they're not wired to anything given the ID doesn't change.
Makes sense, like the 8100 it doesn't have a desktop version of the PCB.
The weird one is the IIvx/vi. There is only the desktop version, but they considered making a tower - the IDs for it are in the SuperMario source. I wonder if the Finder shows a tower icon on my IIvx if I plug an LED harness in? (In 7.1).
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