Color Classic Power Issues/Able to Use LC 475 Board?

[sixers105]

Hi Everyone,

This is my first post as a member! Glad to be a part of the 68kMLA! A few weeks back I picked up a Color Classic that was sold to me as dead, for all intents and purposes. I have scoured the message boards and tried all of the PRAM tricks, etc. along with everything listed at http://classicmacs.org/2011/09/troubleshooting-a-color-classic-that-wont-power-on/.

I have had limited success with the 24-hour power soak, as at least then I get the machine to show some signs of life - green light on the front and some decent noise (fan, HD spinning up, etc.), but sometimes that is followed by nothing on the screen, and other times I get a gray screen. Have not been able to get past a blank gray screen with no cursor.

It's entirely possible I need the caps replaced on the stock CC board, but wanted to run something else by you guys. I had read somewhere that an LC 475 board would work in the Color Classic, and I have a working LC 475 board, but it seems to me that this board does not match up with the Color Classic's connectors. Any suggestions on this? Thanks!

 

[krye]

As far as I know, only a 520, 550, or 575 will work. Anyone know differently? I'd like to know too since my CC needs a new board.

 

[uniserver]

I am a fan of the 520 and 550 in the color classic.

They are the same boards just the 520 is 25mhz and the 550 is 33, both 68030's.

And The most ram one will accept is a 32mb stick, just like the LC-III/+, I have verified this.

Welcome to 68kmla! enjoy!

475 - no this will not work.

575 - yes this will work with some mods, they call installing this board, and making the mod, MYSTIC upgrade.

The 520 and 550 just work, and match up with the rear I/O plate , these boards are just drop in and go upgrades.

 

[Macdrone]

I agree with uniserver, but will add one thing that 7.6 will not install on a 520 board in a CC due to the video not being 640x480. That is why the 550 board is wanted. Since the 550 board was the board in the color classic II it is supported unlike the 520 and 575 being in a larger monitor system.

 

[uniserver]

oh ok, that is a nifty tidbit macdrone.

- Charles

ps: Swear I have 7.6 on the cc /w 520 i got from you.

I could be wrong.

However if 7.6 is on there.. It wasn't installed, it was copied over from a zip disk.

i do know you sent it to me with 7.5.5 on it.

 

[Macdrone]

Installer won't get by the video, I put a hard drive in with 7.6 and a VRAM SIMM (and without) and it still wouldn't boot, something about the enabler and video. I even put the 520 and each color classic enablers in there one by one no luck. If you got it to work I'm impressed. I tried for years. I could be to close to the problem. With the four I had 7.5.5 is all I could get going. Installed 7.6 in a 575 and transferred drive and motherboard over and boom bomb error at boot.

 

[uniserver]

yes i do have 7.6.1 on here.



Id totally hook you up if you need me to.

 

[Macdrone]

So how did you do it?

 

[Macdrone]

Why does the video say 560 x 384?

 

[uniserver]

looks like it gives me the option to chose different video modes?

i have all my OSES on zip disks, The version of 7.6.1 came from a Powerbook 540c.

i just drag and dropped the whole zip onto the hd. easy cheesy.

 

[Macdrone]

Do me a favor and try and boot off cd of 7.6 or 7.6.1. I am not sure if I tried both. At the moment I don't have a 520 as I gave it to you and have not received my 550 board ( which of course I know will work ).

 

[uniserver]

I can't the cd-rom you sent me don't work

also i do not possess a 7.6 or 7.6.1 cd.

 

[Macdrone]

Did you put a terminator on it? It worked when I sent it, I used it to load stuff onto the color classic, I hate age and shipping sometimes. I'm so tired, and I work tonight talk to you all later.

 

[uniserver]

AH no… i didn't think to put a terminator on it LOL

haha.

i would assume i would need a centronics 50 pin kind.

Get some rest buddy

 

[Macdrone]

I thought I mentioned I didn't have an extra, suggest a cable and put a Zip drive on the end to terminate.

 

[uniserver]

it totally slipped my mind... maybe that is the only problem.

 

[Macdrone]

Your a silly goof, you recap motherboards, repair traces, build drive cables and update scsi drive to work in old macs but didn't terminate power on a scsi chain lol.

 

[uniserver]

It's the same kind of scenario where, I used to go into shops for repairs on their Car lifts, bushings gone, Equalizing cables snapped, Composite sliders gone, metal to metal. When all they had to do is spray some grease on the moving parts a couple times a year, oh no, not even auto mechanics can tell there is some binding and lubrication might be needed.

I would say, I'm more aware of scsi voodoo now, back when I first got your machine / cdrom ( last year ), Previously I never had to do much with SCSI before that. ITs hard to identify issues when your not used to messing with external scsi devices with no built in termination

 

[uniserver]

Well thanks to insaneboy and his bag-o-goodies he sent me.

I found a nifty terminator with lights

By the way yeah, the CC will boot from the cd drive now.

It errors at boot because the CD is a 7.5.5 install disk that came with my PM 6100.



So now all i would need is a 7.6 cd.