Re: Samsung Plasma TV, humming buzzing sound

here is what I found out.
I have another small samsung tv. (tested, same result)
the only thing connected at the moment is PS3 using RCA cable.
on both tv I got humm, buzz.. so it must be ground loop buzz.

tried another rca cable.. same buzz.
either I have both cable fautly or there is something else.

found one solution on ebay called "RCA GROUND LOOP ISOLATOR".
I might give it a try.

now I know what cause ground loop in general.

but I dont...

Re: Samsung Plasma TV, humming buzzing sound



Hi Tom66
yes you right, I checked on youtube what 50hz ground loop sounds like
and yes.. that's the noice.

I just wonder how that developed over time, and how to fix it?

some says.. disconnect ground on one side.
like remove ground from tv chassin.

any thoughts ?...

Hi there.
got problem with sound.
TV worked fine all the time, and within a month the buzzing started.
at the beginning it was barely audible, now its unbearable.

basically I hear humming buzzing very annoying
the buzz vary depends if tv displays light or dark colours.
Although changing brightness (any tv settings) doesnt affect it.

I tried to narrow down a problem by isolating components.
I unplugged all sus boards leaving power_supply, av and main cpu board.
and still hear same sound.
I replaced power supply...

Re: Plasma Buzzing Sound



as soon as I plug in a sound cable I start hearing unpleasant buzzing.
Its soo annoying I cant really watch my tv. have to watch it on mute.
or output sound.

question, is there a quick way to test a what cause it ?
or should I replace power board straight away....

Re: New Members - please post your introductions here

Hi guys, I decided to join a forum that have the most sensible links from google.
I'm electronic hobbist and I decided to give myself a go with a tv repairs.. since lots of my friend report some issues I decided to spend to time trying to help them fix it. rather than throwing good stuff away.