@keithdevereux A got a »Welti 1c« from Welta (Freital, near Dresden, Germany) the other day in a similar condition but gave up repairing it :(. Gave it away into (hopefully) more proficient, and most importantly, more patient hands :D
Müßiggänger und Faulenzer, nerviger Linux/Unix-Missionar, Desciple of Robert Yannes, DD.Occasional #Monsterdon attendee; If you’re not into it you might want to mute that tag right away.