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It should just boot regardless of it being a G4 or having the Crescendo software installed. Check the RAM is up to spec, the CPU daughter card is cleaned and check if the card sags in the slot - I've a similar card which needs to be placed just right from years of gravity affecting either the...

Anything, I wouldn't buy it. Later universal analogue boards are interchangeable between 120 - 240V with a jumper essentially. Also keep a look out for a junk 512/Plus unit for parts.

All G5 towers are pretty rugged in my opinion, an item that Apple over engineered and frustrating to work on but by and large they are pretty reliable (and cheap to source another locally due to their hefty weight!). As with any older Mac, you will want to remove the heatsinks clean all dust...

Reflow (with new solder) all the wiring going to the tube and behind the plastic housings to it, same goes with the yoke PCB

Earlier boards have a huge sized 0.47uF X2 RIFA capacitor, later boards have 2 x 4700pF X2 capacitor (much smaller), both rated 250V or higher. I'm restoring several Mac Pluses at the moment and yet to find a dud 200V 100uF capacitor (the four big ones usually purple colour. There is also a...

Give the analogue board a tap at startup, I think you've some good old dry solder joints here too. Yes, replacing the capacitors will help you here - notably the low voltage big ones (eg. the 1 x 16V 4700uF and 4 x 16V 2200uF I think it is).

For testing you need the PSU under load, check the HD is working OK on another system and ensure it's running on the bench. When I say working, if the drive heads are stuck or the drive has "crashed", it might cause undue strain on the PSU so make sure it works OK. Noting the fuses blowing...

Can you elicit any change in the LCD with pressure applied to the ribbons, controller etc?

2.5MB in a Plus, SE was a perfectly good poor man’s upgrade in the day, not sure why not recommended 😀 And then the spare sticks you turned into keyrings!

Try it and see, you’ll find out pretty quick if you can’t boot from it, albeit it will likely mount media on the desktop. If it doesn’t boot, it is likely there are no firmware’s it’s just slightly incompatible. Replace with a Pioneer IDE unit which always works.

Nice, did the 575 fit and need many adjustments to drive the CC CRT?

Thanks all - you’re right. My confusion is because all beige Mac Pluses are now yellowed. And all platinum Mac Pluses are now beige! I think I’ll inspect the casings and stick to the one colour that’s the best condition.

Hi, I'm building up my childhood Mac Plus with accelerator and internal SCSI, with packing boxes. This is the box I have - can anyone please clarify was it for the beige or platinum model? Kind of hard to discern (the keyboard keycaps are kind of dark here over the light grey of platinum)...

Yeah, it's asking for a cheap Rage 128, how is dual booting between Mac OS and AIX?

Long term recap, short term get squirting on the CRT adjustment pots to deep clean.

Not in front of a Mac but there should be a Partition icon for the Apple HD formatting program, otherwise use Lido or Silverlining for this. More info here on partition size indicating making partitions < 1GB for anything

I'll hold my soldering iron, thanks joevt for the info - look forward to a patch popping up one day.

Reckon the sweet spot will be Snow Leopard for performance and PPC compatibility, the only website you probably want is Macintosh Garden to download apps and games. RAM is super cheap, along with an SSD which will really give it a kick along.

Try splitting partitions into eg 2 X 1GB (or even 4 X 500MB), or … a smaller CF card. My PB150 has a cheap generic CF adapter and 512MB Sandisk CF I also recall issues with larger cards.

This is great, for non programmers would you please upload the ROM images here and take a shot of the back of the adapter 7100 showing where the rear bodge wire is going? I've owned an ANS 500 for years (and have a 7100 ROM PCB pretty sure somewhere!) and would love to see it running Mac OS.