My contractor just installed our new 65 inch TV into our wall. The problem is it's about one inch too high. There are now 9 holes drilled into the wall, and only 2 holes is into wood. The rest is with plastic anchors into drywall. Would it be safe to remove these screws, patch the holes with wood filler, and remount the TV one inch below? The TV weighs 65 pounds and uses Samsung's no gap wall mount.
Yes you should be able to move it. If the screw pattern is regular you may be able to get away with a few extra holes and be able to reuse some of the original holes.
One warning - Do not use wood filler to patch holes. It will not adhere correctly to drywall and not look good. Use a premixed joint compound if you want ease of use. For example: this one
Use a suitable drywall anchor for the screws. Here is one that can hang 75lb each. Home Depot