Any former Lamm Preamp Users? What did you buy next?

A competent technician - aka "repair guy" - doesn't need a schematic. Tube circuitry is actually a lot simpler and easier to repair than solid state. Find a competent technician. Don't go spending $$$$ on a new preamp. You already have enough invested in the Lamm. 

I can recommend Audio Classics in Vestal, NY.

Lamm is theoretically still operating out of Miami, and I would think you could return the item there for repair.  However, I did have a Lamm pre amplifier, and moved on to the Ypsilon.  It was more expensive, but it also sounds better.  

We repair audio components and the Lamm is a good unit.  Not expensive to repair.  WE also can offer upgrade options.

Happy Listening,

@jasonbourne71 Sorry for my language.... he's not just a repair guy. He's an accomplished engineer who repairs high end gear. Also, he's not the only one who I have spoken to about this piece. 2 well know techs have said repairing Lamm is a crap shoot. I've spoken to Elina Lamm and she's trying to get a repair situation up and running but there's no guarantee. My unit is an early one and if a more recently built unit popped up, I'd grab it but that doesn't happen very often.... so I'm looking for something to enjoy now.