Can't duplicate any disk

[Pitou]

Jim, please read carefully,

From my very first post:

- Tried 2 different ribbon cable.
- All drive were powered by external PS. Tried 2 different Power supply.
- Tried 3 different PC 1.44 floppy drives

All those 3 drives write fine in a PC using windows AND the SAME ribbon cables
Tried 2 different cables.

How do you know for sure that the write gate is not changing states? What pin are you looking at?

Again in my previous post:

I took my scope and looked at pins 22 (Write data)  and 24 (Write Gate).

Pin 22 looks fine, I see the signal, however pin 24 (Wgate) is always High

So I looked at pin 24.


Yes I can desolder the bridge, will it help?

Pitou!