I have my desktop computer connected to the TV using a 1mtr HDMI cable. I wanted to reposition the desktop and hence bought a cheap 3mtr HDMI cable. With the new cable I noticed that whenever I switch the fan on or increase the fan speed the HDMI connection flickers, similar to unplugging and re-plugging the cable. Apart from that the new HDMI cable works as it is expected to. (It has 4K written on it)
I re-attached the old cable and I could not reproduce the behavior. The new 3m cable is thicker than the old 1m cable hence I assumed it was of a decent quality if not a good one.
I plugged the new HDMI cable to the laptop (connected to the power source) and I was unable to reproduce the problem. My Desktop has GTX 1660TI graphics card with 500W ps.
I would understand about electrical noise if the TV flickers or the desktop restarts/turns off due to power shortage when the fan is switched on. But I cannot seem to understand why is this behavior seen only with this new HDMI cable. The TV doesn't flicker otherwise when connected to the Firestick or never flickered when the 1m HDMI cable was connected.
The TV and the desktop are connected to the same socket (cannot avoid this as there is only one). The fan is in the same hall, perhaps the same circuit, but not connected to the same switchboard. Another fan in a different room does not cause this problem.
Can someone please shed some light on it? How can i prevent this on the cable I bought? What are the implications of this behavior (if any) on the devices connected? In this case the TV and the graphics card.
Well, one might say "Go for a more expensive cable", surely but, I would like to understand the dynamics behind this happening and therefore ensure that the expensive cable wouldn't have the same problem. If this is not the right forum for this topic can someone please point me the right direction?