An electrical grid with Information Technology, automation, and communication technologies that can track power flows from points of generation to points of consumption is known as a "smart grid" (even down to the appliances level) and control the power flow in real-time. Such a smart grid network is composed of equipment that shares different maintenance and alert reporting with the Control center. We propose a novel approach for secure equipment diagnosis and maintenance with the help of Blockchain and ABE. The proposed approach needs to provide secure communication between equipment, the control center, and maintenance personnel. We consider different categories of maintenance personnel as vendors and non-vendors depending on the equipment warranty. We also include a bidding process for allocating the maintenance work to the respective maintenance personnel if the equipment is not under warranty.