After years of faithful service the X scale on my mill has stopped counting. I've swapped the X and Y connections on the read out and it is the scale that is faulty. I think one of the quadrature outputs is not working as the display just flickers from 0.00 to 0.01mm as the table is moved over large distance It it a heidenhain LS308 scale which does not appear in the current online catalogue. Are these repairable? and are replacements available?
Any guidance would be most welcome