48w led panels

All electrical lighting questions in here please. Including outside lighting and light switch / dimmer questions.

Moderator: Moderators

Post Reply
User avatar
Cannyfixit
Senior Member
Posts: 2354
Joined: Sat Dec 15, 2007 7:55 pm
Location: Cheshire
Has thanked: 82 times
Been thanked: 155 times

48w led panels

Post by Cannyfixit » Tue Mar 24, 2020 6:53 pm

Bought 4 x 48w led panels off EBay to replace the Fluorescent lights in the garage whilst I’m stood down from work I fitted them today,problem is now they interfere with the radio I’m assuming it’s the power supplies I’m I right if so what power supply would be be suitable
I think I’ve fell into the buy cheap buy twice trap lol
If you feel you have benefited from the Free advice given on the Forum, Please consider making a donation to UHM's Nominated charity, read all about it and donate here :

http://www.donnasdreamhouse.co.uk/#/ple ... 4529684719
User avatar
ericmark
Senior Member
Posts: 3131
Joined: Tue May 10, 2011 2:43 am
Location: Mid Wales
Has thanked: 75 times
Been thanked: 613 times

48w led panels

Post by ericmark » Tue Mar 24, 2020 8:15 pm

Switch mode power supplies often work in the kHz range, and also often have a warning no more than one meter of cable should be used between power supply and lights, however a guy called faraday realised you can use a cage to stop the interference. First thing is insure there is a good earth, but likely the interference can be reduced, you do not say what radio, if using a world wide radio to work earth moon earth communications then unlikely you can reduce interference enough, but for commercial radio it may be possible.

Many years ago as an apprentice I was given the job to install a car radio, in collage we were taught where to fit links, capacitors, and chokes, but try as I could I could not stop the interference, but an old guy came along and said it may be the radio, try this radio and see if OK, and not a crackle, the radio had a very poor front end, and would pick up any strong signal even if not on the frequency it was tuned to. Since then I have found it again and again, poor radios can pick up anything, so step one is try another radio.
Rorschach
Senior Member
Posts: 4157
Joined: Wed Feb 26, 2014 9:35 pm
Has thanked: 49 times
Been thanked: 830 times

48w led panels

Post by Rorschach » Tue Mar 24, 2020 8:52 pm

Try wrapping the cable in foil.
User avatar
someone-else
Senior Member
Posts: 9565
Joined: Sat Sep 01, 2012 6:03 pm
Has thanked: 33 times
Been thanked: 1622 times

48w led panels

Post by someone-else » Wed Mar 25, 2020 7:51 am

Rorschach wrote:
Tue Mar 24, 2020 8:52 pm
Try wrapping the cable in foil.
I see what you are thinking (screened cable) but it will look rubbish and should be earthed at one end.
Fret not, a forum is a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link to find out more.

Working on anything electrical? have you got a multi meter? why not? Would you hit a nail with a shoe?

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

:idea1: How to post a picture on this forum Click here
User avatar
someone-else
Senior Member
Posts: 9565
Joined: Sat Sep 01, 2012 6:03 pm
Has thanked: 33 times
Been thanked: 1622 times

48w led panels

Post by someone-else » Wed Mar 25, 2020 8:00 am

Cannyfixit I would suggest you get a "decent" power supply and replace what you currently have with it.

Often for small lights the power supply is simple such as a capacitive dropper (I have some small lights, and they do have this) if you get a "not cheap" power supply it should work no problems. Your next thing to do is to check the voltage of the LED lights and get a power supply to suit.
We don't know the voltage, but we do know it must be able to supply 48W min.
You could buy one power supply to run all 4 lights (200W), but 4 smaller ones would be better, and in the unlikely event its too noisy you will not have wasted sh@t loads of money.

Either that or buy anew radio :lol:
Fret not, a forum is a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link to find out more.

Working on anything electrical? have you got a multi meter? why not? Would you hit a nail with a shoe?

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

:idea1: How to post a picture on this forum Click here
User avatar
Cannyfixit
Senior Member
Posts: 2354
Joined: Sat Dec 15, 2007 7:55 pm
Location: Cheshire
Has thanked: 82 times
Been thanked: 155 times

48w led panels

Post by Cannyfixit » Wed Mar 25, 2020 4:01 pm

It’s a Roberts DAB/FM radio,DAB has completely disappeared and only the strongest FM stations work but with a hissing noise,it’s less than a metre for the flex from the junction box to the power supply ,lights are 240v/12v ,did look at one 200w power supply but it was mega expensive lol
As for earthing the flex I’m using is 3 core into the power supply with 2 core coming out to the LED
Is the tin foil a joke lol,if it works I’ll try it it as the lights are in the garage so I’m not bothered about looks
If you feel you have benefited from the Free advice given on the Forum, Please consider making a donation to UHM's Nominated charity, read all about it and donate here :

http://www.donnasdreamhouse.co.uk/#/ple ... 4529684719
User avatar
someone-else
Senior Member
Posts: 9565
Joined: Sat Sep 01, 2012 6:03 pm
Has thanked: 33 times
Been thanked: 1622 times

48w led panels

Post by someone-else » Wed Mar 25, 2020 4:49 pm

No, the tinfoil is not a joke (I just don't think it will work) the idea is it acts as a screen, but in order for it to work it should be earthed at one end.
These users thanked the author someone-else for the post:
Cannyfixit (Wed Mar 25, 2020 9:51 pm)
Rating: 7.14%
Fret not, a forum is a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link to find out more.

Working on anything electrical? have you got a multi meter? why not? Would you hit a nail with a shoe?

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

:idea1: How to post a picture on this forum Click here
User avatar
someone-else
Senior Member
Posts: 9565
Joined: Sat Sep 01, 2012 6:03 pm
Has thanked: 33 times
Been thanked: 1622 times

48w led panels

Post by someone-else » Wed Mar 25, 2020 4:50 pm

200w 12v powersupply Less than £20 on ebay.
These users thanked the author someone-else for the post:
Cannyfixit (Wed Mar 25, 2020 9:51 pm)
Rating: 7.14%
Fret not, a forum is a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link to find out more.

Working on anything electrical? have you got a multi meter? why not? Would you hit a nail with a shoe?

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

:idea1: How to post a picture on this forum Click here
User avatar
Cannyfixit
Senior Member
Posts: 2354
Joined: Sat Dec 15, 2007 7:55 pm
Location: Cheshire
Has thanked: 82 times
Been thanked: 155 times

48w led panels

Post by Cannyfixit » Sat Apr 04, 2020 8:42 am

Just an update on the I interference issue,I have shortened the flex to the lights to the minimum,originally I had around 2mts of flex on each light to allow me to drop them down for maintenance,each light now has about .5mt the Interfernce has almost gone,so what I’ve done now is resite the radio to the furthest point away from the lights and by hitting the mono button on the radio I can now listen to my favourite stations :huray: :huray:
If you feel you have benefited from the Free advice given on the Forum, Please consider making a donation to UHM's Nominated charity, read all about it and donate here :

http://www.donnasdreamhouse.co.uk/#/ple ... 4529684719
idkhow2diy
Senior Member
Posts: 214
Joined: Sun Jan 10, 2016 8:37 pm
Location: Leeds, West Yorkshire
Has thanked: 31 times
Been thanked: 26 times

48w led panels

Post by idkhow2diy » Sat Apr 04, 2020 10:39 am

Cheap power supplies usually have no suppression (it seems many in particular from China have the space for the components but none fitted). It's a pain those of us into amateur radio suffer from all the time. I dismantled a wall-wart that produced hash all over RF in our house to find exactly that case.
Post Reply

Return to “Lighting”