hi there, i have done all this and it makes no difference, it is the tv that is giving off a Radio frequency interference and LG say this is quite common and there is nothing they can do. Mint lol

If it hasn't always done it it sounds a bit strange and more like something is failing!?

Hopefully your TV will die soon and your broadband will improve

Move the television away from the phone cable? Possibly make a cage/screen from aluminium foil for the modem/hub (earthed) and see if it improves.

Move the master socket? Does the drop wire come onto the eaves? If so, get BT to move the master into the attic or an upstairs room and install a modem there and then run a single Cat5e to where you want the router.

The interference might be affecting neighbours too, and it is feasible that you could get an order to turn off the TV and remove it...very very rare, but it is something to consider, as are your consumer rights.

I think I might be able to help here.

I do allot of electrical experimenting and have experienced similar things happen to my router (resyning) from some of my experiments.

This particular circuit I was working on involved high voltage arcs and every-time an arc was drawn the internet connection would drop and the router would resync.

This might be what is happening with yours, basically circuits inside of consumer electronics are "joined together" using solder. Its a common thing for these solder joints to eventually crack from the heat inside of the TV. Every time the TV is on the air inside of it gets hot and the solder joint expends and contracts when the inside of the TV chasing cools. Over many cycles this can cause the solder joints to become cracked and a poor electrical connection is being made. And sparking/arcing occurs from the poor solder joint.

Now if this only happens when you turn the TV on it might be in an area of the circuit board that is only needed/draws more power at power on. Also does the display brightness randomly change slightly at all? As that will use a small HT inverter to power the back-light (around 600v-1kV if I recall, this is enough voltage to ionise air and give off a ton of electrical noise if faulty).

It could also be the outlet too, to test simply unplug the TV and plug in a lamp to the outlet and see if you can see the lamp flicker at all. If if flickers or dims then you have a bad outlet which is easily replaced. Just don't do this when you have an inductive load running such as a washing machine/dryer/vacuum cleaner as these can cause lights to dim slightly momentarily when they begin to spin, thus it would be an unreliable test. Or simply plugging the TV into a different outlet in the house would be fine for determining if the outlet is at fault.

We had a similar thing with the outlet that our kettle plugs into and after boiling water you could take the plug out of the socket and the neutral prong would be quite hot!

Not saying the TV is faulty, it could well be something else but its my thought's anyway!

Also what MHC is referring to might sound strange but having an earthed metal cage is called a "Faraday cage". Its the same thing as being inside of a car and having it struck by lightening, the electricity would travel through the cars metal body and then arc from the wheel axils and go directly to ground/earth. It is becuase that would be the least resistive path for the electricity to travel. Same applies to RF interference and more so becuase of the "skin effect" with high frequency's.

Sorry if this makes no sense!

Edited by deleted (Thu 26-Jan-12 19:32:12)

It's a big issue...

If it's cutting your broadband off, it's probably doing it to certain neighbours too.

So be considerate and either
a) move the TV
b) get it fixed or
c) move the router elsewhere

Your next move has got to be to talk to your neighbours and find out if they are having problems too ... it may not be a failure but could be a resync at slow speed of large numbers of errors. If so, then you MUST resolve the problem which as MrS alludes to could be a complaint to LG and the potentially trading standards as it is possible that the Tv is outside permitted radiated RFI limits.

I have the same problem.

Brand new tv bought yesterday, plasma, interferes with my broadband router.

This happens on 2 different routers. Didn't happen with my old LCD tv.
Doesn't matter where the router is in the house, it interferes.

I've contacted the television manufacturer who havent been much help.

In reply to a post by Angrydog:

I have the same problem.

Brand new tv bought yesterday, plasma, interferes with my broadband router.

This happens on 2 different routers. Didn't happen with my old LCD tv.
Doesn't matter where the router is in the house, it interferes.

I've contacted the television manufacturer who havent been much help.

Is it "Fit for purpose?"

Personally, I would complain and reject it.

In reply to a post by MHC:

In reply to a post by Angrydog:

I have the same problem.

Brand new tv bought yesterday, plasma, interferes with my broadband router.

This happens on 2 different routers. Didn't happen with my old LCD tv.
Doesn't matter where the router is in the house, it interferes.

I've contacted the television manufacturer who havent been much help.

Is it "Fit for purpose?"

Personally, I would complain and reject it.

It's going back tonight. Gutted as its a really nice tv