Is there a difference between Linn LP12 lingo 1 vs lingo 2 other than the case?

Earliest versions of the Lingo 2 were identical to the Lingo 1 ( known as the shoe box) except for the case. Later versions were slightly modded as to how the board was connected and mounted and a few other minor aspects...leading to a difference in SQ.

If I'm not mistaken, later Lingo 2's had SMD devices. One of the big knocks on Lingo 1's was the filter on the line inout spewing out lots of crud. I have a very late Lingo 1 (power button is different from early ones), which I bought new, and surprise, no line filter on the input. I had my Lingo completely recapped in 2019 and it's working great. The recap was precipitated by an issue I started to experience at 45 rpm which per the trouble shooting guide (finally found it on line), it was indicative of a failing phase. Recap and now 100%. Botton line, in my experience, Lingo 1's are not all alike and Lingo 2's are not all alike.