[Coco] tandy 1000 ex/hx external 720k drive to use on coco

[Josh Harper]

inside the external case you have the  drive  it has a ribbon cable connector and a 4 pin connector  then u have a separate pcb  with a small ribbon cable that connects to the drive and the pcb has a 4 pin  power cable that connects to the drive, the pcb then has a edge connector to connect to the computer   I disconnected both cables from the drive that are connected to the pcb and took the pcb xomplely out of the case 
       From: Bruce W. Calkins <brucewcalkins at charter.net>
 To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
 Sent: Friday, June 19, 2015 3:05 PM
 Subject: Re: [Coco] tandy 1000 ex/hx external 720k drive to use on coco
   
The 4 pin connector (many Tandy 1000's did not have one and shunted power 
through the ribbon cable.) should be the standard 3.5" floppy power 
connector.  A picture and model numbers might help identify the drive.  On 
the Tandy floppy drives without the 4 pin connector some of the ground lines 
carried the power and traces needed to be cut and power lines tapped in. 
Not an easy project unless you are proficient reading schematics and/or 
tracing PCBs.  I converted one 720k 3.5” Tandy 1000 drive about 20 years 
ago and would not bother doing another.  Although 1.44M 3.5” are getting 
hard to find nowadays.

Bruce W.





----- Original Message ----- 

From: "Josh Harper via Coco"



> I have a tandy 1000 ex/hx external 720k floppy drive that I want to 
> convert to coco use
> ive taken out the pcb that was in the case that was hooked up to the drive
> I have the ribbon cable to hook to the drive and the coco
> my issue is I need to know how to get power to the drive,the power 
> connector is a 4 pin connector
> thanks guys for all ur help
>
> --


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