Jump to content

Colour Classic II


Recommended Posts

  • 68kMLA Supporter

Picked up a Colour Classic II. It's a bit battered and bruised from a past shipping experience I assume, but it's still in one piece and I'm really happy with it.

 

The auction listing said it was totally dead. I had to do a few things but it's all working fine now.

 

D8AB242D-B6B1-49E8-AD6B-A3CACBF74F7B_1_105_c.thumb.jpeg.afe62d00e43cd081cc6902820de8a8dc.jpeg

 

Swiftly recapped the logic board:


165FAD9A-629B-4280-9960-1AE3494BD172_1_105_c.thumb.jpeg.1eacf96c02c965a49ec01c908fd010a1.jpeg

 

Egret had some corrosion but it came clean:

 

1231841A-C795-4E17-A63C-FAA9363FD5B5_1_105_c.thumb.jpeg.4e1b704360b8e7c848c1a896f3dfb71c.jpeg

 

After cleaning:
 

ECEF78A3-D274-4795-8BD9-AA3B76EA1685_1_201_a.thumb.jpeg.dc9757ff9122f9edfafcd3c2de85984f.jpeg

 

Sound was intermittent even after a recap, so I removed the sound chip and it was awful underneath it - and then one of the pins came off, it was just corroded. I scraped the epoxy top off the IC until there was some exposed copper I could solder a bodge wire to. It's not pretty but it works !

 

1DDBF535-68B1-4683-98DC-FFF263AF9838_1_105_c.thumb.jpeg.e855b9ee2fc9f1010b4ee1af9e2ee7ca.jpeg

 

The original hard drive works. The floppy drive works. This is a really awesome cute Mac!

 

Things on the way:
 

  • FPU to fill the empty FPU socket
  • 32MB RAM SIMM

 

I've thrown an Ethernet card in there. And that's about it for now. The analog board *looks* OK but I will probably recap it at some point.

 

Link to post
Share on other sites
  • 68kMLA Supporter

I spoke too soon, the SCSI drive died.

 

I've been assembling my own BlueSCSI boards, and put one in there yesterday: it doesn't work because it seems to need term power rather than bus power, or perhaps 5V is low and I should recap the analog board. Either way, I've got the connectors ordered up so I can add one and try it with term power instead.

 

Spent a good 40 mins trying to remove the old drive without removing the analog board, gave up in the end and removed the analog board to gain access:

 

6826B2C4-8C6C-45CB-8659-490FAFD1044F_1_105_c.thumb.jpeg.e056d448a2cf3460519437f5e80cf75c.jpeg

Link to post
Share on other sites
  • 68kMLA Supporter

On 7.1, it just says Macintosh in the About box. The board is the same as the LC 520/550, as far as I know. This still has an 030, not an 040 like the 475.

Link to post
Share on other sites

575

 

I'd be interested to know about machine identification too, as I had an LC550 (68030) board in my CC at one stage, and as I recall, it needed the ResEdit hack to work. I'm wondering if the stock CCII and LC550 boards really are identical or if there is an identifier somewhere.

Edited by beachycove
Link to post
Share on other sites
20 hours ago, beachycove said:

575

 

I'd be interested to know about machine identification too, as I had an LC550 (68030) board in my CC at one stage, and as I recall, it needed the ResEdit hack to work. I'm wondering if the stock CCII and LC550 boards really are identical or if there is an identifier somewhere.


The LC520, LC 550, and CC2 boards are all identical. In fact the same Apple part number is printed on the boards from all 3 of these models.

 

The difference is the speed of the oscillator on the board in the machine it’s in. Apple even used different clock chips (at least the printing on the CPU indicates the chip is a different speed than the machine it runs in). 
 

I have seen 16mhz cpu in the board running 25mhz, a 25mhz cpu running 25mhz, a 25mhz cpu running 33mhz, and a 33mhz cpu running 33mhz. All with the same printed number on the logic board with the 820-0368 number on it. 

So it would seem that Apple was kind of the Wild West around 1993-1995 period and did all kinds of strange things like use the exact same motherboard model in several different machines, changing out only the oscillator. 

 

3C03C419-D5A8-446E-A4AC-CFF4624FB4D5.jpeg

Edited by MrFahrenheit
Added photo
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...