A relative was babysitting Carter at the time of the accident while the youngster’s mother was at work, the inquest heard.
The lounge door was closed as the landlord and workmen were busy elsewhere in the property, and after the incident they helped to lift the items off Carter.
Giving evidence on Friday, Carter’s grandmother Helen Mayhew said the room was recently decorated and new carpets laid.
Asked if the TV and fireplace appeared to be securely in position, she told the inquest: “The day before the accident, me and my husband were looking at what we needed to secure it.
“They were resting against the wall but there were no fittings to attach it.
“The plan had been to secure it.”
Ms Mayhew said the family did not know how the fireplace had suddenly toppled over.
She said: “That’s one of the questions we had. Did Carter stand on it? Did Carter pull on it? We don’t know.
“He was just a happy toddler.”
Forensic pathologist Dr Jamie Robinson told the coroner that Carter had suffered a severe injury to the right side of his head which he said would have rendered him unconscious from the outset.
Dr Robinson added: “He would not have survived, regardless of any medical intervention.”
