Hi Scot,
Did you happen to find the source of why it was creating these glitch sounds ? I have a Forat Linn9000 I acquired not too long ago in a very similar state that yours was in. It seems to freeze when the disk controller card is in but if I take that out it boots up fine as well as records and plays back sequences, but the drum sounds are glitchy. Curious if you found the issue on your Linn.
In my case, I never got too far before I had to set the project aside. I contacted Bruce Forat, who informed me that I simply needed to load any and all sounds from disc to get anything other than glitchy noises from it. I checked with the previous owner who confirmed that he had indeed had every ROM slot replaced with RAM, so there are no onboard sounds. As I didnāt have any disks, and because Forat only sells the entire (and massive) collection for hundreds of dollars, I put the project on hold and, well, sort of forgot about it.
Once the pandemic dies down, I will likely get back into it, though.
Interesting ! Thanks so much for your response. Mine came with 1 floppy disk, but seems like the problem is coming from that disk controller card. Iāll probably call Bruce to see if thereās anything else I can try.
For all I know, my problem is a bad card or some other failure. However, it would cost me quite a lot to find out. As far as I can tell, Forat is the only place to get disks, so Iām left with buying the whole collection just to find out that it doesnāt help me. And the thing is, I donāt really use samples I donāt make so I am not sure if it would be worth it to me. 
Right totally, I understand that. Iām not sure if itās worth it either, but would be curious to see if itās anything I can try to fix myself or trade for another drum machine of some sort !
I would say definitely not worth fixing, unless youāre an obsessive about sequencer timing and āfeelā, which was itās thing. I sampled it and moved on.
Hereās my kiddo playing with it (almost 20 years ago! Wow.)
Absolutely not obsessive (well, or about those things, anyway 
) but this particular unit has some personal history and meaning for me, so Iāll get it going someday!
