just confirming... do we know for a fact that its supposed to be a 2n3904? because i feel like it is reading very very differently then the transistors that are next to it... I looked in the manual but it didnt list any transistor numbers.
i did find a pinball repair website that did agree with you that 2n3904 was correct for q48 though, it also said you could use NTE 123AP and so is a 2N4401
on the pinball repair website it also said this:When Replacing Bad Driver Transistors...
ALWAYS check the coil mounted diode too! Often the coil mounted diode will break, causing the driving transitor to fail. If the diode is not replaced also, the driving transistor will fail again and again. This is often overlooked in DataEast/Sega games.
is this something i should be doing for q48 transistor?