The black cardboard cylinder is a multi-part electrolytic capacitor .
From the photos it seems to be a 3 capacitors.
If you carefully check on the outside surface you will 3 geometric marks
normally a square, triangle and a line with a uF value beside each
of these marks. For example:
with a voltage rating (ex:350vdc) for each (or the same for the 3).
And be carefull because it’s a ‘floating’ capacitor
with its common tabs (3 of them with yellow wires) NOT GROUNDED to the chassis !!
So do not clip your testing instruments ground to those tabs but to the chassis.
Good luck !