Sold Amiga HD-DiskDrive

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They are 0.25mm wires used in coils and are insulated enough ☺️
Sorry i have to go now.
Board seems ok.

Edit: The r21 resistor have not been changed. Maybe that helps.
r21 is change to 56k , and the wires are isolated , drive are test on myn a3000 and 4000 , ( i test alway the drive's befour i ship it ) maybe hi have a escom a1200 board ( that board got a fix on the back side on the disk drive connector
 
r21 is change to 56k , and the wires are isolated , drive are test on myn a3000 and 4000 , ( i test alway the drive's befour i ship it ) maybe hi have a escom a1200 board ( that board got a fix on the back side on the disk drive connector
You have change the wrong resistor. R21 is still 100K according to his photo and another resistor is changed to 56K. See the photo.
I don't think that this is the problem as long as the drive was tested before by you.
I will not be involved here any further and I think I shouldn't have done it anyway.

Edit: if it is an Escom you are right!
 
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Connected the drive (data and power cables) to DF1: port of A1200 with Kickstart 3.1 and Workbench 3.1, however, I could not make it work as HD drive.

how you connect it to df1: , can you make a picture of it , i think you mis something , the drive are test befour i ship it , normale if you use the drive as df1: you need a pcb like the other amiga drive that connect on the extren disk drive port , when you use ( like the 2000/3000/4000 ) a intren cable for df0 and df1 , then you need twist the last connector on the cable for df1
I systematically re-checked the cables, connectors, jumpers, and combinations of the settings, and finally got the drive working as HD when:
- connected to DF0: port
- jumper in position 1 (setting for DF0:)
Under these conditions it works as HD even when another standard DD drive is connected to DF1:

When connected to DF1: through a cable with reduction from external to internal drive connector (yes, it includes a PCB and looks similar to what @livewindarefail posted), the drive doesn't work as HD. Its behavior is:
- not working at all if jumper is set to position 2 (setting for DF1:)
- working as DD only if jumper is set to position 1 (setting for DF0:)

So, the good message is that the drive works as HD when connected to DF0:. Initially I had problems even when using it as DF0:, but either I must have mixed up some settings during my initial tests or something has changed when I opened the drive, and played a bit with the wires and connectors and then reassembled everything again.

The bad message is that the HD drive mod is not compatible with (at least some of) DF1: external-to-internal floppy drive reductions used on A1200. But I can live with that.

Thanks for your support and patience.
 
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