Technicians called in to fix or reinstall a television see a very consistent set of problems. These are not rare or exotic failures — they are the same four or five mistakes, repeated across different houses, different TV sizes, and different budgets.
Mounting Above the Fireplace
The fireplace wall is the most common TV location request and the most consistently problematic. The issues are two: heat and viewing angle.
Fireplaces — even gas fireplaces with electronic ignition — produce significant heat in the space above the mantle. Television manufacturers specify operating temperature ranges, and these are often exceeded by direct fireplace proximity over the years of use. Heat kills electronics gradually, through component degradation and dried-out capacitors. A television that lasts eight years in a normal installation might last five years above a fireplace.
The viewing angle problem is even more immediate. A TV mounted above a fireplace is typically one and a half to two metres off the floor — the top of the screen at ceiling level or close to it. Watching at that angle for two hours produces genuine neck strain. Modern televisions are not designed to be viewed from below. Contrast, colour accuracy, and off-axis image quality all degrade when looking upward at a steep angle.
If the fireplace wall is the right wall for the television, a recessed installation that brings the TV down closer to eye level is the correct solution, not a standard surface mount.
Wrong Anchoring Method for the Wall Type
Not all walls are drywall over timber studs. Older homes have plaster over lath. Some newer construction uses steel studs. Brick, stone, and concrete walls exist in many Canadian homes. Each requires a different fastening approach. A standard wood-screw stud-mount bolt installed into a steel stud will pull out. An anchor designed for drywall will fail in plaster. The fastener selection has to match the actual wall construction, confirmed before drilling.
Incorrect VESA Measurement
VESA is the standardised pattern of holes on the back of a television used to attach a mount. It is specified in millimetres — 200×200, 400×400, 600×400, and so on. A mount rated for one VESA pattern will not fit a TV with a different pattern. Checking the VESA spec of both the TV and the mount before purchasing the mount is the step that gets skipped, resulting in a return trip to the hardware store or an incompatible mount sitting in packaging.
Cables That Cannot Be Changed
Running all cables permanently inside the wall during installation feels tidy. It becomes a problem when a device needs to be added, a cable needs to be replaced, or a connection type changes. A better approach is an in-wall cable management kit that routes cables through a conduit — still hidden, but accessible when needed. A completely sealed wall installation is a trade-off that many people regret when they add a game console or upgrade a soundbar two years later.
No Consideration of Ambient Light
A TV positioned directly opposite a window will produce significant glare during daylight hours, regardless of the TV’s brightness or anti-glare coating. Testing the intended position against the room’s natural light pattern at different times of day takes five minutes and prevents a permanent installation that is unwatchable in the afternoon.