Is this how the electricity gets in the house, the small brown thing?
Swap the rcbo wires over 6 amp to 6 amp if the same rcbo keeps tripping then it's faulty.
OK.... I agree that a faulty RCBO is a possibility, but frankly, if you can't tell the difference between the incoming cable TV wire and the mains electricity, then you shouldn't be doing anything inside your consumer unit.
