[Jukebox-list] FOLLOW UP TO SEEBURG TSU5 ISSUE

It was suggested I test DC voltages to both C514 & 515 as well as pull the 6X4 and test the AC coming in.  80VDC on C514. 69VDC on C515.  C514 was heating up with these tests so I switched off the machine as soon as I could read the voltage. With the 6X4 pulled I next tested 313VAC coming from the transformer to pin 7 of the 6X4 socket but then something unexpected happened: C514 blew. There should have been no voltage reaching either cap with the tube pulled. This suggests a short somewhere but I can't visually see any short. How else would voltage reach the caps? I'm replacing both caps & getting a new 6X4 next week but I don't see this solving the problem if the cap blows with the tube out.  Any ideas or suggestions welcomed.

jerold k