[Test-Equipment] What replaces my PCB capacitor in Scope??

[Soundval]

I have an Advance Instruments scope,  OS2000R.

.It has, what is left of, a PCB capacitor, the label being:

      " DUBILIER
        DUCONOL
        K107
        5y's(?) + 10% -5%
        360V   50%
        3rd harmonic  50%
        -20 degrees C to +60 degrees C
        Made in UK 683440 "   

It exploded.

Any suggestions for what or how to replace it?

 I am still looking for the schematic for this scope.

Eugene Rippen,  WB6SZS