Problem with floppy drives

[Tesla]

Hi Dave,

These are the pictures, probably I am wrong, you must know that my soldering capability and undestanding is very very low.
Give me your opinion.

Thank for your help.
Marco

[Dave]

It looks fine to me. It's not a dry joint, as far as I can tell from the potatograph.

[Derek_Stewart]

Hi,

I think you need to contact Tetroid, who maybe able help, unless all sanction prevent contact.

Can you check cable to verify what 3 wires are twisted?

Looking on Wikipedia for the floppy drive connector:

Code: Select all

PC DRIVE                     QL
12  DRVSB   Drive Select B   14
13  GND                      13
14  DRVSA   Drive Select A   12		

The idea is to select PC Drive set as Drive 1 or DSRVSB, and change the drive ID to DRVSA

[Tesla]

Hi Derek.
I get the cable by you, time ago and the 3 wires are twisted. Initially everything worked well, SGC + Qimsi + floppies, but, then there was a lot of increasingly serious malfunctions.
When I replaced the SGC with an old GC everything came back ok, except one of the floppies that does not work. I think your cable is ok.
I will try to put back the original floppy that I had replaced thinking it was broken and then we see. The new one was purchased on ebay and I am not sure it is fully functional.
I'll let you know.
Thanks for the help.
Marco
I

[Derek_Stewart]

Hi Derek.
I get the cable by you, time ago and the 3 wires are twisted. Initially everything worked well, SGC + Qimsi + floppies, but, then there was a lot of increasingly serious malfunctions.
When I replaced the SGC with an old GC everything came back ok, except one of the floppies that does not work. I think your cable is ok.
I will try to put back the original floppy that I had replaced thinking it was broken and then we see. The new one was purchased on ebay and I am not sure it is fully functional.
I'll let you know.
Thanks for the help.
Marco
I

If you want I can look at the SGC, I have some spare parts and verify the disk operation

[Tesla]

Hi Derek,
Thank very much for your kindness.
Send me your address by PM, I will send you the card.

Best regards
Marco