Roger Mills wrote:

Mr Google suggests that it contains a capacitor which, if it develops a
short circuit, can exhibit these symptoms

The oblong capacitor might just be for suppression, it looks like a
metallised film type, older ones are susceptible to developing cracks in
their case, try de-soldering it or snipping it out ... if that helps
then an example replacement X2 cap would be

https://uk.farnell.com/epcos/b32922c3104k000/cap-0-1-f-10-pp/dp/2728566