Voltes Combining Impossible

Zuuru used the beast fighter Bombos's X-ray eye to analyze Voltes as they were volting-in, then after he found out how the electromagnetic energy flows inside Voltes, he sent robot Namazungo to disrupt the volting-in sequence with super electromagnetic wave that can neutralize Voltes' super electromagnetic field generated during volt-in sequence. With Voltes unable to combine, how could they beat the Boazanian beast fighter?