Helping people with computers... one answer at a time.
Leaving your TV hooked up all the time is unlikely to pose a danger to your equipment as long as you consider a few issues.
I have a PC to TV with HDMI hookup. Can I leave it hooked up all the time? Will it damage anything if I do?
In this excerpt from Answercast #10, I examine the ramifications of leaving a computer hooked up to a TV permanently and suggest a way to minimize hardware damage and save on electricity.
You certainly can leave it hooked up all the time. I don't see any potential damage.
The only time that I can think of as an issue is if you're in an area that gets lots of thunderstorms; then sometimes a lightning strike can travel from one device to another.
But it is highly, highly unlikely (even in those lightning prone areas) that this particular connection would carry anything that would concern me.
The only thing that might impact your system is leaving the screen on all of the time.
You do realize that a TV left on all the time, not only is it using electricity, but (depending on the technology of the TV) you could be shortening the lifespan of the TV itself.
So, if you're talking about just leaving the physical connections in place, not a problem.
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