Loud buzzing sound when focusing on some window's, partial fix

ellellell1 said:

Hi there

I have already tried connecting everything on the same power outlet, with everything plugged into a single power strip, still buzzing.

Interestingly, the TV and Main Audio System actually don't gave a ground prong.

The computer and monitor's do, but I wouldn't attempt removing those.

If you have a cheap "sacrificial power bar" you can connect them on it and remove the ground from that instead, for your test.

Most of the time it's what I do... I've been installing audio stuff since 40 years, and at least 3-4% of installations have that kind of hack... No one chasing me because he's business burned or someone got electrocuted... and I can tell that in a city mall "0" audio stuff is grounded... it's all one pair, all the way.

If you still get that buzzing sound... It could be your Video card that is interfering with other component in your computer... But I rather not think about that now...

I lately learned that even grounding high power LED flood lights was not always a good thing too, $$$$... Even if there's a ground lead coming out.

Well done for the progress and the other tips from experienced people

This would probably be the last thing you look at. Do you run a router and LAN setup?
The last buzz i got fed up with was my Samsung 17" smart not so nice tele. The buzz that came from that thing was really loud.

Yes, and i found another buzz years ago. It was my 4 port switch for my home router setup.

With everything powered up, turned on, stereo turned right up, i could still hear this whine. So i slowly turned each part of the loop off, bit by bit, i found the buzz was coming from my LAN connector from the router, down the switch and a little buzz mainly getting worse when the LAN light showed green and stuff.

It was silent, about mid night, really quiet and could still hear this pinging electrical noise.
So i switched my router and and switches off at the mains where the little power adapters are, and boom, it went.

I used to use those cheap powerline adapters thru the mains for a LAN before but theyre terrible for noise, worse than what this was. But you couldnt miss it. This was a teaser and ive of never thought its good to match the frequency hz of each device and go with that for the monitor or TV freq, definetely helps eh

The aim for me is to match the frequency which goes for all peripherals, even check the hz on the router power supply, if you have one that is. Get them to all be in sync.

For me i sit at a poorly 50hz with my equipment, but i keep the Contrast and Brightness down as much as i can to reduce the flicker. I do love the dreaded 49" Samsung tho but the amount of noise it produces on Frequency Modulator is probably the main reason for DAB radio equipment now. Cant listen to FM with a wire these days. You gotta get the damn TV aerial plugged into it. Well then it picks up about 100 rds channels, no buzz
tho and have turned the whole setup into a PC monitor through the Service menu inside, and you would have to worry about putting the heating on if you want to turn this monster up bright

Not sure if youve been thru any Smart TV service menus, but theyre wicked and very very powerful. More than you can imagine inside it.
I managed to turned my 49" into a full blown PC Monitor thru the menu. and Boots very very fast.

Took me months to figure it all out but worth it

I got my multimeter out, thought that was abit over the top

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Yep, took the mains plug out from the back of the PC, which was sat on a Copper coffee table at the time, and had the HDMI just resting on the table.
Because the PC wasnt earthed, that little thing was sending a tingle thru the whole coffee table when i swapping parts over.
I felt my face and arms buzzing when i was touching the table. Couldnt work it out what was tingling to start with, then realised it was my skin being charged thru a 50 year old hand me down. Remembered the lack of earth doh, plus didnt realise how much HDMI oompff the back of my Panasonic puts out, even when off like you say

Thanks for the info. I do actually have a Miracast V2 adapter which I can use instead.

Only supports 1080p and not 4k, but tbh most content I consume is 1080p anyway.