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could anyone help me with electrical buzzing??


frostman

Question

I woke up last week and my psu in my computer was buzzing/crackling. I went downstairs to the back of the lcd to and i can hear the same thing happening? the plugs are both 13amp(sorry dont no much about electrics)

Does this sound like a wire problem? i no recently all the fuses in the fusebox were changed if thats any help?

any info would be great.

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OK, I overlooked this earlier, but the fact you have 2 items suddenly buzzing, indicates (In the Don's opinion):

An issue on the ring main (as a result of the fuse changes) or there is an external issue with the mains quality itself.

Poor quality waveform (sinusoidal) on the mains supply will cause some transformers to go noisy.

The Godfather

i know the fuses where changed weeks ago, so it is possible the buzzing to occur say 3 weeks after the fuses were changed? would that make sense? I have no idea what to do as i next step myself, i guess an electritian is my best bet.

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i know the fuses where changed weeks ago, so it is possible the buzzing to occur say 3 weeks after the fuses were changed? would that make sense? I have no idea what to do as i next step myself, i guess an electritian is my best bet.

Check the fuse supplying the sockets.

There could also be another issue, inside the fusebox or the supply HED.

My view is based upon 2 separate items suddenly going noisy.

The Godfather

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Welcome to the forum Frostman, personally I would get back the person who changed the box just to check everything is ok.

batty

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Welcome to the forum Frostman, personally I would get back the person who changed the box just to check everything is ok.

batty

and if its nothing to do with what the person has done, expect a bill for it

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and if its nothing to do with what the person has done, expect a bill for it

Well there is that, perhaps Frostman could check his PC or LCD at another installation (work or a friends house).

The Boys

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Well there is that, perhaps Frostman could check his laptop at another installation (work or a friends house).

The Boys

or another circuit

gpt a call today form someone i done some work for a few weeks saying his oven is tripping MCB when its turned off at the socket. apparantly its my fault because its on a socket i replaced... he eventually agreed to try it in another socket before getting me to come out because he doesnt want to pay a callout if its the oven (which is 9 years old, and the problem didnt started a few weeks after the work)

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or another circuit

However he did say PC upstairs, LCD down, perhaps he only has 1 ring main.

Hopefully he'll come back to us soon.

Don

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and if its nothing to do with what the person has done, expect a bill for it

Hang on a minute Andy he said he was going to get an electrician anyway surely it would be better to get the person who changed the fuses back although I assume by changing fuses he may mean plug in ones like wylex. If it was a board change the person who did it is responsible for the work and as you know if they are plug in fuses you still need to issue a certificate as you are changing the tripping current of the device. He may have changed them himself though so there will be no certificate we need more information to make a judgement on what could be wrong.

Batty

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definately need more info on what was done, but the fact still stands that he could get a bill if its nothing to do with what the sparky done (although a phone call from him to the sparky for advice would be much better than asking here)

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I would check the stuff thats buzzing at a friends house or next door before calling out an electrician.

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I would check the stuff thats buzzing at a friends house or next door before calling out an electrician.

You are an Electrician, GH. So why would you call one out?:|

]:)O)Blushing:D

:coat

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an update*

I now know that 3 of the 6 fuses were changed, so thats 3 new replaced fuses, and 3 of the old fuses that were in there originally. The ring main has not been changed,(does this need changing?) so is this mixing of fuses ok?

I have also tested the PSU from the computer round a friends house and there is no buzzing, yet when i plug it in here the problem still persists.

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what do you mean by '3 of this 6 fuses were changed'?

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I'm thinking along the same lines as Bob,,

Dirty supply, low supply voltage, harmonics

Could be due to a faulty joint in the supply cable or a nearby factory??

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I'm thinking along the same lines as Bob,,

Dirty supply, low supply voltage, harmonics

Could be due to a faulty joint in the supply cable or a nearby factory??

so you would rather try to hide the problem with a UPS rather than get the problem fixed?

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Welcome to the forum Frostman,

Could you just clarify why you had a electrician out in the first place? Did he/she give any explaintion of why the 3 fuses were replaced? Think it may shed some light on what may be going on with your home electric's.

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Welcome to the forum Frostman,

Could you just clarify why you had a electrician out in the first place? Did he/she give any explaintion of why the 3 fuses were replaced? Think it may shed some light on what may be going on with your home electric's.

hi there was no eletrician, the 3 fuses were took out and whilst on the floor they got damaged so a family member came round and replaced the fuses for me. there wasnt a problem in the first place, the fuses just got damaged thats all. cheers

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what were they replaced with?

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what were they replaced with?

from what i gather,

3 porcelain 5 amp fuses were replaced with mini circuit breakers . the other 3 are the remaning porcelain fuses.

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