PDA

View Full Version : Faulty ceiling light query

Littlepeahead
24-12-17, 10:44 PM
My living room ceiling light has packed up. I could buy a new one but I really like the design of this one.

For a couple of weeks upon switching it on it would buzz and flicker and then come on. Then if you turned it off then straight back on it wouldn't work but after 5 mins or more it would.

Now it won't come on at all although the bulbs, which are LEDs, glow then go off so power must be getting to them a little.

I've checked there are no loose or faulty wires in the ceiling and at the switches.

All the bulbs are fine as I replaced any blown ones.

Any advice from the sparky orgers is much appreciated. Candles are getting a bit boring!

https://uploads.tapatalk-cdn.com/20171224/eb5d581ec2726985c854c2a9e3011375.jpg

Sent from my SM-G930F using Tapatalk
Bibio
25-12-17, 06:55 AM
its fooked. although LED's last a long long time the drivers and power supplies give up due to heat (fries the components).

buy an new one.
SV650rules
25-12-17, 07:41 AM
its fooked. although LED's last a long long time the drivers and power supplies give up due to heat (fries the components).

buy an new one.

+1

LED's normally have a constant current driver, they work on the amount of current flowing through them not the voltage (that is why when you buy LED bulbs for your bike or car they normally have a voltage range of 9 to 30 volts DC or similar). Heat will fry them, it is normally any electrolytic capacitor in the power supply that fails.... (they always do after a certain lifespan).
Heorot
25-12-17, 09:27 AM
LED's or mini halogens? I had the same problem with a mini halogen light. I just needed to replace a part hidden in the light. It was a 12volt system running off mains electricity. Worth a look anyway.
SV650rules
25-12-17, 10:32 AM
Some LED's don't like dimmer switches - they have to be labelled 'dimmable' - normally the dimmer switch goes bang, but sometimes the LED power supply module.
Littlepeahead
25-12-17, 01:17 PM
Some LED's don't like dimmer switches - they have to be labelled 'dimmable' - normally the dimmer switch goes bang, but sometimes the LED power supply module.It's not on a dimmer.

Sent from my SM-G930F using Tapatalk
Heorot
25-12-17, 03:33 PM
Open the base unit and you will probably find a rectangular unit between the mains input and the lights. If so, that is likely to be the cause of the failure. Cheap to replace.
Littlepeahead
25-12-17, 04:41 PM
Open the base unit and you will probably find a rectangular unit between the mains input and the lights. If so, that is likely to be the cause of the failure. Cheap to replace.I'll give that a go, thank you.

Sent from my SM-G930F using Tapatalk
Bibio
25-12-17, 07:04 PM
something else to check is the wiring at the wall switch and the light connections. make sure they are tight.
SV650rules
25-12-17, 09:25 PM
something else to check is the wiring at the wall switch and the light connections. make sure they are tight.



I've checked there are no loose or faulty wires in the ceiling and at the switches.
All the bulbs are fine as I replaced any blown ones.


LPH always one step ahead LOL
SV650rules
25-12-17, 09:37 PM
you need something like this - if you know manufacturer of your light unit may be best to contact them for correct unit.

https://www.ebay.co.uk/b/Home-Lighting-LED-Drivers/20705/bn_55178118
SV650rules
27-12-17, 06:24 PM
The only other thing may be the switch contacts or mechanism failing, may be worth trying a new switch as the cheapest option.
Heorot
29-12-17, 12:25 AM
you need something like this - if you know manufacturer of your light unit may be best to contact them for correct unit.

https://www.ebay.co.uk/b/Home-Lighting-LED-Drivers/20705/bn_55178118

Yep, that's the item I was talking about. The old one should have the voltage and amperage on it. As I stated before, cheap to replace.
Littlepeahead
29-12-17, 07:31 AM
My bro in law is a qualified electrician although he modestly does smoke alarms in office blocks but I might get him to help me take it apart. I reckon the little white box is the issue here.

Sent from my SM-G930F using Tapatalk
ethariel
31-12-17, 09:09 PM
Yep if you are getting that buzz and it wont work for a while after being switched off, sounds (as above) like the LED Driver is shot. Simply check the spec of the current one and get a 'decent' replacement off ebay or amazon, don't just buy the cheapest, Mean Well are a reasonably good domestic supplier but not the cheapest.