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 Post subject: Electrics making a noise
PostPosted: Sat Jul 22, 2017 9:51 am 
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House was rewired not long ago, but recently sockets have started to make a clicking noise (more like a discharge sound). Also things plugged in are doing the same.

I have had 3 tv's break. My latest one, was fine for a few weeks and now has started making noises.

Just opened up a socket and all looks good and the earths are connected.

I have used an electrical socket tester and impedances are good and its seeing everthing as good.

Also this is also on seperate circuits, upstairs and downstairs?

I know tv's do discharge, but compared to other peoples houses this is definitely excessive and its other items too.


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PostPosted: Sat Jul 22, 2017 11:59 am 
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There is nothing in a normal socket that can make a noise. (Unless it is a loose / bad connection)


What is a "discharge sound" :dunno:

Could you make a video and upload it to say, YouTube?

What happens if you unplug Everything?

Do any of your sockets have a built in USB port?

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No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

If gloom had a voice, it would be me. :mrgreen:

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PostPosted: Sat Jul 22, 2017 12:31 pm 
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someone-else wrote:
There is nothing in a normal socket that can make a noise. (Unless it is a loose / bad connection)


What is a "discharge sound" :dunno:

Could you make a video and upload it to say, YouTube?

What happens if you unplug Everything?

Do any of your sockets have a built in USB port?
I was just thinking it could be a transformer

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PostPosted: Sat Jul 22, 2017 1:07 pm 
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You need to check to for loose connections arcing will cause noise were wires tightened up using torque screwdriver should be around 1.5 to 2 nm also has circuit had insulation resistance and continuity tests ?

If your using a plug in tester they don't tell you that much


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PostPosted: Sun Jul 23, 2017 6:50 pm 
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I would love to film/record it but its knowing when its going to happen and which one.

I have m.k. logic sockets which i bought online from ebay. Could they be fake? But why click.

As for continuity and insulation tests, would this not have been done when electrics were tested and passed off?

If a specific socket gives off a noise, will that be the one that may have loose connection? or any in that room or circuit?

Unfortunately came home today and my electricity usage monitor is now dead. Power supply was very warm, but unit doesn't even work now with batteries. :pukeleft: Update: Just took the monitor apart hoping to see something that might give a clue, but couldn't see anything. Put it back together and its now working. So possibly the psu caused the problem as it was very hot when unplugged. Will have to monitor my electricity monitor now.


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PostPosted: Sun Jul 23, 2017 11:25 pm 
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Electrician should have tested but unless you are sure this is speculation if one socket is making I would replace that one or check connections there could be fakes unless they were bought from reputable business seller

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PostPosted: Mon Jul 24, 2017 11:21 am 
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It needs testing properly to track the fault, TV's have zero discharge into the main's, are the effected sockets on the same circuit ? did the mk sockets come from a uk source ?

TV's were all 3 TV's the same make and model ? from the same supplier ?

The sound, is it a buzzing/crackling any smell ?



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PostPosted: Mon Jul 24, 2017 12:10 pm 
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Bob225 wrote:
It needs testing properly to track the fault, TV's have zero discharge into the main's, are the effected sockets on the same circuit ? did the mk sockets come from a uk source ?

TV's were all 3 TV's the same make and model ? from the same supplier ?

The sound, is it a buzzing/crackling any smell ?


That's the thing. It needs testing properly.
Could be anything. :dunno:



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PostPosted: Mon Jul 24, 2017 3:42 pm 
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My brother is Niciec certified and has £2-3 grands worth of test gear (iirc its all fluke) the paperwork was a nightmare, but most use a tablet these days

The process for testing isn't simple and you really need to know what your doing, some of the maths is mind boggling to joe average

If its been done by a properly qualified professional it will be on the niciec database http://www.checkmynotification.com/


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PostPosted: Mon Jul 24, 2017 8:09 pm 
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lagi wrote:
I would love to film/record it but its knowing when its going to happen and which one.

I have m.k. logic sockets which i bought online from ebay. Could they be fake? But why click.

As for continuity and insulation tests, would this not have been done when electrics were tested and passed off?

If a specific socket gives off a noise, will that be the one that may have loose connection? or any in that room or circuit?

Unfortunately came home today and my electricity usage monitor is now dead. Power supply was very warm, but unit doesn't even work now with batteries. :pukeleft: Update: Just took the monitor apart hoping to see something that might give a clue, but couldn't see anything. Put it back together and its now working. So possibly the psu caused the problem as it was very hot when unplugged. Will have to monitor my electricity monitor now.



You need to monitor overvoltage. If you have lost 3 TVs etc then this could be a supply issue. Contact your DNO and ask for the house voltage monitoring - it might cost you.


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PostPosted: Mon Jul 24, 2017 9:25 pm 
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Hello :wink: I work as a Tv repair engineer and as posted there is no discharge down to earth from a modern Tv. Their power supplies are sensitive to high voltage pulses down the mains though. This can damage the switching circuit and blow the internal mains in fuse in the Tv. It sounds as if there is a 'flashover' happening on your mains supply with some pretty high voltages coming in. Modern switch mode power supplies which are now used in lots of products, will tolerate a wide range of mains variation i.e. 200v to 260v and still work well, but short pulses will get past any input filtering and can cause permanent damage. Unless you have got some massive inductive load on your house wiring, my guess is that your wiring is OK and it's down to the supply company. Regards, SJM.

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