1987, Bearing improved with better lining material and tighter tolerances. 1987 March, new formica and MDF armboard 1985 December, strengthening blocks on corners of plinth 1985 September, diode modification to Valhalla 1985 August, cap head screws on bearing housing 1984 June, sub-chassis strengthening bar epoxy glued instead of spot welded 1982 May, Valhalla crystal driven electronic power supply made standard
1981 February, Nirvana mechanical components 1978, Top plate modified (Linn claim Nirvana kit available this year) 1974, Main bearing liner changed, sub-chassis strengthened, motor control and mains switch changed This might not be a popular opinion but it's your money and I know if I still had a Linn where I'd be putting mine! The Origin Live gear is better than Linn now anyway. It's a fraction of the cost of the Linn and is better. The Origin Live has 45rpm and can even do 78rpm with a little adjustment. The DC motor upgrade was very significant, far better than an over-priced Linn AC motor PS in my view. My Valhalla LP12 broke down due to a common fault with the PS (overheating resistor - R9?- blows a bridge and the whole thing is defunct) so I swapped it out for an Origin Live DC Motor kit which comes with its own box and cables and takes a novice like me about an hour to fit. You can change any PS to anything you like. I'm not aware myself of an LP12 fitted with that from the period your turntable comes from. If you press and hold that start switch the light goes from red to green which indicates 45rpm. The post from above mentions the 45rpm facility which is something the Axis had as standard but it's PS was altogether very different. The Valhalla is recognisable by the simple black press button start switch which has a small LED inside and lights (red?) when running. The LP12 came with Valhalla so your turntable should have that power supply if it's from 1992. If it helps any, I used to own a Linn Axis from 1990 and an LP12 from 1985.