Amiga 2000 Floppy Drive problem

On 7/1/05, Teo Zenios <teoz at neo.rr.com> wrote: > I was messing around with my Amiga 2000HD today (installing a 2.04

> Rom to replace the 1.3 Kickstart among other things) and now my internal > floppy is dead. The drive worked fine after I changed the rom and the HD

> installed workbench 2.04, it was when I reassembled the system and

> I noticed the floppy was no longer working. I took the drive out and

> notice any smell or burnt traces (as if I had the power connected

> and it fried), any way to troubleshoot one of these things (Chinon

Hmm... given that there isn't _one_ FDC chip - perhaps you could check your 8520s? Those control the floppy digital signals (presuming your problem is that the drive doesn't light up, as opposed to a spinning floppy that won't read - that can be analog electronics or Paula). You could remove the drive, check carefully for shorts so you don't fry another machine, and try it on another machine (as DF1, to be most helpful). I'd also make sure you didn't dislodge the DF1 jumper on the motherboard - the A2000 is quirky in how it supports drive selects and internal/external drive numbers. This shouldn't affect DF0, but it _will_ affect DF1. I guess I should have asked first - you do have the schematics, don't you? They are at the back of the Tech Ref manual if nowhere else (for pre-v6 mobos - not sure where to find late-model schematics). I guess the point is - determine if it's the Amiga or the floppy drive first. As for troubleshooting the drive itself, I don't know that a) there's enough information to successfully poke around in the innards, or b) you'd be able to find parts to fix if it you could.