AM radio tuned to around 600Khz is a good way to find the noisy kit

Really not crazy, it's a faulty device. People often have these kinds of problematic devices and it doesn't affect their own broadband but can cause neighbours lines to drop out instead... So you can see this kind of thing becomes complicated.

Probably best to stop the engineer coming out as you'll be charged the expense if no faults found apart from a problematic device you introduced into the equation.

Thanks for your reply. I'll phone BT and get them todo a line test while roku is gone. (its packaged up for return Monday now) And i'll see what they say. If they say they still detect a fault even tho everything is working perfectly now, i will question them specialty about charges and if i can get engineer canceled.

Cheers for the help ukhardy07 and everyone else who replied to this post.
I will update this post sometime and say what occurred to BT etc and that it seems fine now.

Yep it's pretty black and white. Without the device it's all fine therefore you don't have a line fault. Perhaps their test did find a fault due to it.

Either way if an engineer comes out to your property and finds no fault he will log a no fault found which often means a charge of just over £100 is passed onto the end user... If you admit it was a problematic device in your house again you would be liable. Ultimately best to stop anybody coming into your property by cancelling the engineer

You have to remember that any device that has a stand-by function, is not OFF, if still plugged in to the Mains (or has batteries in it.)

So in degree, it is still in an operational condition, to be able to "recognise" what-ever "WAKE-UP Call" is sent to it.

In a mains-operated device, this also means that the power supply part of the device must be working, just as it would be normally; and the present-day, "switching" type of power supply circuit is notorious for the amount of Electrical Noise produced.

Such Electrical Noise can spread, both by Conduction along the Wires/Cables; and by Radiation from the same wires/cables (including inside the actual device).

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Think of a conventional switch and the occasional sparking that you may have observed.

A Switching Mode Power Supply has the potential to do this 100 times per second, ie at twice the frequency of the Mains Supply (would be 120 times a second in most parts of North America).

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A modern TV set in Stand-By mode is still drawing around 5 Watts of Power, to be able to Wake-Up, compared with around 125 Watts when fully operational.

============================

The Quiet Line Test is an excellent starting point for virtually any Broadband connection problem, costing NOTHING to do, yet potentially revealing MUCH, whether ADSL or VDSL or even Dial-Up.

And as you have seen, right down to simple Audio Calls.

Hi i did a BT quiet line test and it sounds fine. Since Roku device has been packaged away and completely disconnected i'm not experiencing issues at all.

When i phone BT to cancel the engineer what do i say? If i tell them it was something my end might they charge me even before engineer comes out? (He is due to go to the exchange on Thursday not my house)
So when i phone them today what shall i say to cancel that engineer?

Not aware of any charges for cancelling an engineer when its so many days in advance.

Just say fault has been resolved and service is fine and they'll cancel visit.

Not having encountered "roku" devices before, I have just done a Web Search and note that they are for streaming etc.

Is your one based on a "simple" USB Stick as in-

http://www.roku.com/uk/what-is-roku

or is it a larger, distinct unit?

======================

Just followed through your earlier link; and note it appears to be a distinct unit, although I did not see any mention of how it is powered.

Edited by deleted (Mon 31-Mar-14 10:27:09)

Phoned BT and they canceled the engineer so i think I'm safe from BT call out charge
Thanks for your help saffron.

II planned to use it for £5.99 a month Netflix before it caused chaos.
This is the exact one i got from amazon.
http://www.amazon.co.uk/gp/product/B006VTASW4/ref=oh...
I'm very certain it is faulty. As i said amazon are collecting it today.
My broadband and land line has been perfect since the device is turned off. It uses 2.5watt and cant be turned off. It remains in some kind of standby mode forever.
Due to this i lost confidence in that device and asked for refund not a replacement.