Can a Bad HDMI Cable Damage The TV?

Can a bad HDMI cable damage the TV? It depends. A faulty HDMI cable or broken HDMI cable usually results in no signal if it’s damaged. However, sometimes there are cables so faulty they can cause video or audio damage. For instance, if you blow out the volume of your TV, the speakers might end up with scratching noise. The cable can even affect your media players or console systems. It’s best that you have good HDMI cables so that you don’t risk damage from the equipment itself. You can’t really be sure if the damaged cables will only distort the signal or damage the actual television itself. Individual components of the TV can be damaged or render a system inoperable when push comes to shove.

Because every HDMI receiver, videogame console, and TV is different, you might end up with an old-fashioned earlier version of the HDMI cable that’s slightly too big for a smaller, more modern component that’s more compact. Connecting your cable right might be as easy as maneuvering it properly to see whether you can secure a solid connection or not. For all other instances, troubleshooting is your best bet.

Ultimate guide to HDMI Cable

HDMI Signal Issues from Cables or from the TV

If you wish to know how exactly HDMI cable damage can, in turn, damage your TV or other equipment, then keep on reading. You should be aware of this fact because many people conclude that damaged HDMI cables areas “harmless” as coaxial wires. The damage to your TV can be through your hands or through accidents like power surges. To wit: 

  • Faulty DIY Repair Attempts: Some might be under the wrong impression that the bad signal from media player to HDTV is not from the cable but from the TV itself. Compromised HDMI cables can lead to those who attempt to fix their TVs in a do-it-yourself (DIY) fashion to spend hours or days troubleshooting components they shouldn’t even touch. Therefore, indirectly, the cable caused them to damage the internal components of the TV by not having the presence of mind to double-check if it’s a cable issue rather than a TV issue.


  • Cable-Based Damage to the HDTV or Source Device: A faulty cable can also cause damage to your HDTV or media source directly. Check the receiver or another spare TV in your house to see if the cable is acting up. Or get a healthy cable and see if it’s working on your HDTV or device that you suspect has gotten damage. If your device, like Blu-Ray player or a game console like ht PlayStation 4, where to throw a surge into the receiver and TV HDMI inputs, that could take out the inputs board on the TV and receiver. This is something that does happen but not usually with a PC. This is also the reason why it’s important to have surge projectors or power strips that prevent surges from damaging your electronics due to faulty wiring.


  • Check for Loops and Then Unravel: There are a few things you should check on your HDMI cables before actually testing them. This way, it will be easier for you to narrow down the problems with the wiring. If your cable is looped into tight bends or coils, then you should solve any issue with it by unraveling it. When it comes to these cable types it’s not recommended that you wind them up too much. You could cause breakage within the internal parts of the cable, which are more sensitive to cables of the past because they carry so much more data.


  • Check for Bends and Unbend – Why do HDMI cables fail? : Although HDMI cables aren’t as sensitive to twisting or bending like fiber optic audio cables, they will have transmission issues regardless of when sufficient damage to the cable has happened, resulting in bends. Sometimes, a bent cable can be straightened out and salvaged before you need to buy a new one. HDMI cables are still more delicate than their coaxial or component counterparts and their simpler design. You could accidentally damage the cable by bending it too sharply or stepping on it.


  • Check for Extensiveness of Pin Damage: If looping or bending isn’t the issue, search for bent pins at the back of any of the components linked to the cable. The transmission of information could become imperfect or outright impossible depending on how bent those pins could get. The picture is usually the first thing to go when it comes to bent pins. You also want to double-check the connector hood at the cable’s end to make sure it’s not restricting the cable from doing proper connections. Some hoods are so big that connecting them to smaller ports can prove to be an issue.

Can a Bad HDMI Cable Damage The TV?

How to Test The HDMI Cable – Signs your HDMI cable is going bad

After determining whether the HDMI cable has a damaged body, a bent pin, and so forth by visually checking for breaks on the insulation or the ends of the cable itself, you can now test it to see if the physical damage is the culprit behind your audiovisual issues. You can check what’s wrong with your cable for sure using the following techniques. 

  • Check for Compatible Connectors: HDMI cables can come with various connectors, the square-shaped hoods being the most popular among consumers. You need to ensure that you’ve bought cables that match the ports of your TV. HDMI is a universal standard for HD connections for displays and media sources, even including PC desktops and laptops. Regardless, some older HDMI cables might have too big or too slow a connection to handle the speeds of UltraHD 4K or 8K resolution, which can explain quality drops or choppiness.


  • HDMI Cable Swap: You can swap HDMI cables from another audiovisual setup, like HDMI cables from your speakers or another TV set in your house. It can also come from the cables reserved for your digital projector if you own one. You’ll quickly figure out if your original cable is faulty or not if the system starts working immediately due to a cable change. Don’t forget that a defective cable in one system might work fine in another due to matching impedance and the like. It tempts you to simply replace the cable and be done with it, doesn’t it?


  • Remove the Caps: HDMI cables come with connectors that have hoods to protect them. For certain instances, you might need to remove the cap or cable clip. Maybe you won’t have to do so depending on where it’s supposed to be connected, like your audio equipment or your DVD or BD player. If you lack space and can’t maneuver the connection then you’re left with the option to remove the caps to allow a more solid link to happen. These caps are typically made of rubber or plastic. Some users opt not to bother and just buy new cables.


  • Check for a Signal: After you’ve done all the necessary troubleshooting and double-checking of the connection from the pins to any bends on the cable then you should check the signal. Put the cable back in, turn on your device, then turn on your HDTV and check to see if what you did to it has solved the problem.  Make sure the right HDMI port is activated (HDMI1 or HDMI2). If you’re still not getting a signal from it despite your best efforts then you should get a new set of cables. Your cables might be faulty, even if it works on your other appliances…


  • Buy a New HDMI Cable: HDMI cables are relatively cheap so most people opt for buying new cables if their old cables are giving them connection issues, frame drops, latency drops, or resolution drops. Again, you’ll know it’s your original cables that are faulty if the new cables do the trick in fixing your audiovisual issues. Otherwise, you’ll have to do more troubleshooting to see if it’s your source media player or your HDTV that has issues. After all, a bad cable can damage a TV or media player under the right (or maybe most unfortunate) circumstances.

What to Check For with Faulty HDMI Cables 101 

If you’re experiencing audiovisual system difficulties, you should definitely check your HDMI cables first before checking the equipment. On top of that, you should get a repairman to handle the equipment troubleshooting because amateurish hands tend to damage devices. The faulty cable should be checked first even if it’s brand new. There are, after all, a number of problems that a bad cable can cause. The most common issue is having a fuzzy picture, a discolored picture, or no picture at all. You can also intermittently lose the picture for good measure.

Aside from the video of your HDTV coming out with poor screen resolution that’s all pixilated or contains all kinds of artifacts, you should also watch out from having no sound. The HDMI cable is different from other cable types in that it can contain both data streams for the video and audio information coming from your media player, game console, streaming device, or cable/satellite box. The sound can range from crackling, which implies a connection problem, or even being weaker than before, as though volume info isn’t being delivered properly. It can also cut off intermittently along with the picture.