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Just the time aspect at the moment, getting a chance to do DIY is rare these days. If it is low risk, I'll just leave it as is.

I have one of these type external junction boxes fitted as part of a security light setup for the house. https://www.toolstation.com/junction-box-ip65/p99418 Stupidly I tore all the rubber out one of the side entries, rather than the specific cutout that leaves a bit of a rubber seal. With a...

Turned off the water supply, and open a tap in kitchen to drain - noise still there. Out of desperation I closed my eyes, and tried to locate just by hearing. Sounded lower down this time. By chance, I picked up a cat toy off the landing floor, and the noise stopped! Turned out it was an...

Ok might have a go at isolating the water side at weekend. I think it's an underground electrical supply by the looks of it. No, it's not a vibrator.

Checked smoke detectors - doesn't appear to be from them. Not removed the battery from the Drayton LP722 timer yet, but if it's just a coin battery for time/date memory, can't believe its the cause of the noise. It is relatively loud. I'm wondering if it might be from the meter outside at the...

Right, turned off everything on consumer unit, noise still there. - could be plumbing/HW cylinder? (It is a constant high pitch whine that is there regardless of if CH/HW is on or not though) - could be smoke alarms (wired, but with battery backup) - could be boiler timer control unit...

Ok then, i might nock off all electrics today, at least then i can narrow down to whether electrical, plumbing or bees

i might nock off all electrics today, at least then i can narrow down to whether electrical or plumbing.

End of terrace, the noise is more the side with no-one attached

yes appreciate that, just thinking people may have also had a similar noise, and could suggests things I've not thought of yet

I do have 2 mains powered smoke detectors linked together. Might investigate that...

No dimmer switches in house. Electrical wiring by itself wouldn't make a noise? Thought maybe a transformer or switched mode job, though it is a high pitch noise not low 50hz hum. Might nock everything off tomorrow when missus is out the house.

For the last couple of weeks I've noticed a high pitched buzz/hum, like the sound you get from electronics sometimes. I've tried to work out what it could be from, and it's doing my head in! So far, I've ruled out something plugged in sockets, smoke detectors, bathroom extractor fan/sensor...

I fixed it (sort of) Hard to explain, but it involved squashing the bracket at the end of the spring loaded arm attached to the top of the ladder, to provide more of a 'hard stop'

Don't recall a V retaining bracket coming with it. The ladder is attached to the beams that go in between the loft joists, as part of the loft hatch. That is where the ladder banging from being stowed is cracking the plaster underneath. I think like you said, I'll need to think of someway to...

Hi all, I installed a 3 section spring assisted loft ladder some time ago from b&q (branded Mac allister, but basically an abru one) Recently I've noticed when stowing away in loft with the pole, it really bangs down on the ceiling (in fact it's cracking the plaster) There doesn't seem to be...

Yep, both 1200w & 600w (y)

Update - I took a punt and ordered a new rocker switch. It is now working correctly. So either the switch and PCB had gone, or just the switch. Maybe the LED part went, who knows. No way to really test that with DMM.

I've put some pictures of the momentary rocker switch below, and a cct diagram. Using the dmm, all I could see was pressing the rocker broke the connection between the black wire pin, and the two pins in the middle that are bridged together. Didn't appear to be any continuity with the end led...

Update - ordered new design PCB off ebay. It's arrived and I've fitted it... ...and it still doesn't work. It sounds like it is in constant lo speed now (though I could be wrong). The hi lo switch still does nothing, and the neon is not lit. Maybe it is/was the switch after all?