Sorry, I have no idea. Maybe others do and are so kind to reply.

If everything fails, you perhaps can try to measure the pins with a multimeter somehow
in order to find out which lines do cary power. Anyway, be careful doing so. It's just meant as a a last resort.

If my mind was clearer now (no headaches and trouble concentrating), I perhaps could give better advices.
Just so much- if you're going the measuring route, try to use a passive analogue voltmeter to figure things out.
They are less likely to harm anything. Modern multimeters use 9v voltage for measurement, which might be to much for some chips.

That being said, I have no real idea how to help with this issue.
Just wanted to reply something so you don't feel like standing alone in the rain so much. 😀

Pics of the docking bay and connector for the floppy?

cyclone3d wrote:

Pics of the docking bay and connector for the floppy?

It's literally just a 34-pin female floppy connector on a PCB at the back of a drive bay.

There apparently is a standard for this sort of thing as "Enhanced 34-Pin Floppy Header", referenced here http://ohlandl.ipv7.net/floppy/Floppy_Pinouts.html under "34-pin Header Interface, Media Sense". I just can't figure out what model(s) of Teac drives use this interface.

Aha - I just found this Teac floppy drive flyer from the year my PC was produced - https://hxc2001.com/download/datasheet/floppy … D-235_flyer.pdf

It says "Another option: A type in which the power source connector is installed within the interface connector is also available."

But it DOESN'T state how that model number was marked, grrrrr!

Sadly, this is a problem I've had with TEAC floppy drives in the past (was looking for a replacement 3.5" for my combo floppy drive) - they have dozens of different sub-models covering the main model numbers and it's very difficult to identify / source the right one even when you're replacing an existing drive (which I assume you're not). Additionally, some of the differing sub-models would appear to be exactly the same drive.

As far as the FD-235 series goes, the list at the bottom of this page may give you a sense of the problem 😲

http://www.datex-dsm.com/floppy-emulator.html

It might be best to contact TEAC Support directly for advice.

Just opened up an IBM PS/2 55 SX and spotted a 3.5" drive with 34p cable but no separate power. That might be what you need...

IBM P/N is 72X6112, and this particular drive is an Alps DFP723D30A

Now, I can't find either of those on eBay right now, but they do seem to pop up occasionally. Hope this helps you a bit.

Cool, thanks!