Ken's preamp and input jacks are plug in parts, so they are pretty straight forward to replace. Just make sure you get the instructions from Ken about disconnecting the preamp. There is a tricky bit with the ground wire that looks like a Phillips head screw but is not. It's a push on cap instead. If you twist it, you can wreck it.
I have bought a preamp from Ken and installed it myself, so it can be done by a user. I did have to send one of my Smiths back to Ken for service once when a prior owner completely stripped the truss rod nut and did not disclose that before sale. Ken had to do some surgery to get it off. For something like that, I'd send it back to the Smith shop.
Nice, Ken just got back to me and also told me that the input jack was plug in. And thats the only part I need to replace, not even the preamp. I am going to check the truss rod today or tomorrow. I have all the right size hex tools showing up and I am going to clean the entire bass, polish the frets and then set it up again. Fingers crossed that the rod is not stripped.
I'm in the market for a 5 string. Anybody selling?
You probably saw it, but there is/was a beautiful White tiger 5er on Reverb for a decent asking price.