Many thanks Ian
Yes, my aim is to return the crossover to original factory condition without solder on any of the fastons.
In this way, the filter could be removed easily from the cabinet; and I could bring the PCB to someone professional to test the capacitor.
I forgot to tell that only 7 of the 10 fastons were soldered. E1 and E2 are not soldered. It is strange.
I have already looked under the PCB and all solders are normal, nicely done.
Damien