Well, if the set uses the 100uf 200v cap for C432, it doesn't use a
relay. The STR30130 regulator IC is switched on/off electrically. You
should always have about 150vdc on pin 3 and the output on pin 4 sits
about 15vdc when set is off and 130vdc when on. It's possible this IC
is bad, and also possible if C432 was open to have burnt resistors near
the IC.