Sorry but if you have 15V at emitter TR27 and 14.3V at Base then TR27 as a PNP type should turn on. (0,7V on its BE-diode) I would check TR27… hx
TR27 tests fine on the transistor tester, nonetheless, i swapped it out for another one. Same thing, nothing on the collector. In any case, this is probably secondary, as the relay should not be switched on in standby mode.
