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Recently acquired a Tandy RadioShack Color Computer 2


mozartpc27

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Anyone know how much these cost (with case)?

 

It really depends on how many are in "the run".. The more that are being built, the larger the Quantities of Parts, the lower the Costs of the Parts..

 

I think the current CoCo SDC Run of 30, are $40.00 ( USD ), plus Shipping. I believe these are Assembled..

 

The run that I bought in, the price was $35.00 ( USD ), Assembled, Plus Shipping, but I bought them Un-Assembled for $25.00 ( USD ), Plus Shipping and put them together. There were from a run of 100, so there was a Price Break..

 

 

The Cases I bought were made by Tim Linder:

 

SDC Case Experiments

 

Image #1

 

Image #2

 

Image #3

 

 

For each Case, the price was $12.00 ( USD ), Plus Shipping, and an Additional $1.00 ( USD ) for the "CoCo SDC" Engraving.. I bought the "Complete Set of Parts", for $8.00 ( USD), plus Shipping.

 

I don't know if Tim is making any more Cases.. I believe there is some one else that is making some cases..

 

MarkO

Edited by MarkO
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I was going to say that you can just use a PC MFM diskette drive cable, but you already covered that.

 

So, I acquired a controller, through a kind poster on another forum. Now, I just need the ribbon cable. Based on this post, I am wondering: will this work?

 

http://www.ebay.com/itm/MFM-RLL-ESDI-drive-cable-set-New-old-stock-15-/131470161739?pt=LH_DefaultDomain_0&hash=item1e9c3b774b

 

If not, anyone got an extra that would fit from a 3127 model CoCo2 using a 3029 model controller going to a 3029 model disk drive?

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So, I acquired a controller, through a kind poster on another forum. Now, I just need the ribbon cable. Based on this post, I am wondering: will this work?

 

http://www.ebay.com/itm/MFM-RLL-ESDI-drive-cable-set-New-old-stock-15-/131470161739?pt=LH_DefaultDomain_0&hash=item1e9c3b774b

 

If not, anyone got an extra that would fit from a 3127 model CoCo2 using a 3029 model controller going to a 3029 model disk drive?

No, those cables won't work. What you need is a straight ribbon cable with the same female plug on each end.

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  • 2 weeks later...

So, I finally have everything together: the controller, the drive, the computer, and this ribbon cable, as recommended by Official Ninja: http://www.ebay.com/itm/24-inch-34-Pin-Card-Edge-IDC-5-25-Floppy-2-Drive-Cable-CablesOnline-FF-005-/270837819768?pt=LH_DefaultDomain_0&hash=item3f0f312978

 

However, it does not appear to be working. Now, the disk drive I had failed to show any signs of life when I plugged it in, even before I ever got my controller, but someone on another forum said that CoCo disk drives would not show any signs of life until hooked up to the computer. I was suspicious, because I mean this thing made no noise, not even a low-level hum to indicate a current was present, and the light never came on, but I pursued it anyway.

 

And even with everything hooked up, the disk drive is as dead as ever. The power light fails to comes on even now.

 

So, any thoughts? Is my drive just dead? Is this the wrong ribbon cable? Have I somehow hooked it up incorrectly (I doubt it)? Any guidance would be appreciated!

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So, I finally have everything together: the controller, the drive, the computer, and this ribbon cable, as recommended by Official Ninja: http://www.ebay.com/itm/24-inch-34-Pin-Card-Edge-IDC-5-25-Floppy-2-Drive-Cable-CablesOnline-FF-005-/270837819768?pt=LH_DefaultDomain_0&hash=item3f0f312978

 

However, it does not appear to be working. Now, the disk drive I had failed to show any signs of life when I plugged it in, even before I ever got my controller, but someone on another forum said that CoCo disk drives would not show any signs of life until hooked up to the computer. I was suspicious, because I mean this thing made no noise, not even a low-level hum to indicate a current was present, and the light never came on, but I pursued it anyway.

 

And even with everything hooked up, the disk drive is as dead as ever. The power light fails to comes on even now.

 

So, any thoughts? Is my drive just dead? Is this the wrong ribbon cable? Have I somehow hooked it up incorrectly (I doubt it)? Any guidance would be appreciated!

If the ribbon cable is on backwards I think the light on the drive would be on solid as it would be spinning.

Do you get DISK EXTENDED COLOR BASIC when you power up the coco? Have you tried a simple DIR to see if the activity light goes on and it spins?

Make sure the disk drives jumpers are properly set for D0. Also, I think the disk drive needs to be properly terminated. A few sets I have here need the termination "chip" in the socket of drive 1 to work properly. You can try a DIR 1 to see if maybe the drive is set to D1 maybe.

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If the ribbon cable is on backwards I think the light on the drive would be on solid as it would be spinning.

Do you get DISK EXTENDED COLOR BASIC when you power up the coco? Have you tried a simple DIR to see if the activity light goes on and it spins?

Make sure the disk drives jumpers are properly set for D0. Also, I think the disk drive needs to be properly terminated. A few sets I have here need the termination "chip" in the socket of drive 1 to work properly. You can try a DIR 1 to see if maybe the drive is set to D1 maybe.

I do get "Disk Extended Color Basic" as a start up.

 

I am really unfamiliar with this system, but I will see if I can implement any/all of your suggestions. I did try the DIR, the computer stops, nothing appears to happen (I assume it is going through a routine to check for a drive), then I get an ?IO Error.

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I do get "Disk Extended Color Basic" as a start up.

 

I am really unfamiliar with this system, but I will see if I can implement any/all of your suggestions. I did try the DIR, the computer stops, nothing appears to happen (I assume it is going through a routine to check for a drive), then I get an ?IO Error.

What model disk drive do you have? Is it a TRS-80 / Tandy stock setup? Like a FD-500, FD-501, or FD-502?

 

The delay and then I/O error is normal and would happen if say, you forget to power on the disk drives power supply.

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What model disk drive do you have? Is it a TRS-80 / Tandy stock setup? Like a FD-500, FD-501, or FD-502?

 

The delay and then I/O error is normal and would happen if say, you forget to power on the disk drives power supply.

 

TRS-80 Color Computer Mini Disk 26-3029

 

I pulled the fuse, maybe that is blown. Doesn't look like it, but I guess I'll run to a hardware store and see about a replacement.

Edited by mozartpc27
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If the ribbon cable is on backwards I think the light on the drive would be on solid as it would be spinning.

Do you get DISK EXTENDED COLOR BASIC when you power up the coco? Have you tried a simple DIR to see if the activity light goes on and it spins?

Make sure the disk drives jumpers are properly set for D0. Also, I think the disk drive needs to be properly terminated. A few sets I have here need the termination "chip" in the socket of drive 1 to work properly. You can try a DIR 1 to see if maybe the drive is set to D1 maybe.

Where would the jumpers be? I have the cover off but I don't see any jumpers.

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Where would the jumpers be? I have the cover off but I don't see any jumpers.

I'm not familiar with that particular drive model. Can you take pictures of it with the case off?

I'm interested to see the rear of the drive out of personal curiosity. I've always read that that model had a card edge connector for the ribbon cable on the rear of the drive. I've never seen one.

Also, I'd like to get a look at the full size drive used in this model.

Edited by Official Ninja
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A little late tonight but I will get some pix up tomorrow.

Thanks.

So, if the 26-3029 disk drive is all stock you shouldn't need to worry about any jumpers for drive ID.

Do you have a way to test the power supply in the drive case? Or another drive to plug in?

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Thanks.

So, if the 26-3029 disk drive is all stock you shouldn't need to worry about any jumpers for drive ID.

Do you have a way to test the power supply in the drive case? Or another drive to plug in?

 

Unfortunately, I have no way to test the power supply, and don't have another drive. As I said yesterday, I pulled the fuse, a 1/4A 250V slo blo fuse, went to Lowe's, and they had no replacements. Will have to look around.

 

Here are some pix of the drive:

 

IMG_20150502_114623_zpswwewr5nk.jpg

 

IMG_20150502_115736_zpslczrolxd.jpg

 

IMG_20150502_114800_zpsvs4egrn2.jpg

 

IMG_20150502_114742_zpscxbrrdnn.jpg

 

IMG_20150502_114730_zpsv9ctpuve.jpg

 

IMG_20150502_114656_zpsucz7euk8.jpg

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The one pic with that focuses on the power supply unit you can see where I removed the fuse - left side of the picture, black bracket that looks like it should be holding something it isn't.

Very nice drive! I like the extender card that puts the card edge connector out the rear of the unit.

I'd guess the power supply in the drive is bad. Or that fuse is blown.. Normally you would see some sort of activity from the drive.

Does it make any activity at all when you flip the power switch? I know all of mine make some sort of sound or the activity light flashes for a split second when initially powered on.

The floppy cable you purchased, is it a straight run of ribbon cable? No twists in the cable like they do on the PC for drive select? Have you tried flipping the cable at the rear of the drive?

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  • 4 months later...

So, only 5 months and the birth of my first child - a boy! - later, and I finally got around to ordering some fuses for this drive and... nothing. At least, not when i just flip the power switch. It isn't currently hooked up to the computer; I guess I'll try that, but unless you hear otherwise from me, it didn't work.

 

So, I guess what I have is a bad power supply then? Blech.

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Ok, dumb question time - you did connect the transformer wires back to the switch and the fuse wires as well, right? (3rd picture)

 

Do you own a multi-meter? If so you can test the power connector where it plugs into the floppy. Black is ground, red should be 5vdc and yellow should be 12vdc (IIRC). When plugged in and you turn the power switch on, you should hear the floppy head seek momentarily, would almost feel/sound like a short vibration. It should to do this regardless of whether the drive is connected to the CoCo or not.

 

The floppy drive might be bad, or the power supply. Without using a multi-meter to check the voltages, it's impossible to say.

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