The cable at home is broken and is responsible for maintenance.

Legal analysis: the power supply unit has the responsibility.

Legal basis: Article 51 of the Regulations on Property Management, water supply, power supply, gas supply, heating, communication, cable television and other units are responsible for the maintenance and conservation of relevant pipelines, facilities and equipment within the property management area according to law. If the units specified in the preceding paragraph temporarily occupy or dig roads and sites due to maintenance, they shall promptly restore the original state.

Within the property management area, water supply, power supply, gas supply, heating, communication, cable TV and other units shall charge relevant fees to the end users. Where a realty service enterprise accepts the entrustment to collect the fees mentioned in the preceding paragraph, it shall not collect additional fees such as handling fees from the owners.

If there are potential safety hazards in the property, which endanger the public interests and the legitimate rights and interests of others, the responsible person shall timely repair and maintain it, and the relevant owners shall cooperate. If the responsible person fails to perform the maintenance obligation, it can be maintained by the property service enterprise with the consent of the owners' meeting, and the expenses shall be borne by the responsible person.