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Dim led downlight

Discussion in 'Electrics UK' started by Jupiter01, 13 Aug 2021.

  1. Jupiter01

    Jupiter01

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    I’ve got two integrated led downlights over my garage door. They’ve been up for 3.5 years. They are fairly low wattage but I’ve noticed that one is dimmer than the other? I’m hoping that this can be seen in the pics.

    I’ve given them a good clean.

    Do they need replacing or is there anything else I could try?

    Thanks in advance.
     

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  3. 333rocky333

    333rocky333

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    Often a sign of the Driver failing, you can often swap just the heads with each other, to test, this will show if its the head faulty or the driver.
    Dont leave head unplugged with the power on though as may damage good driver.
    Drivers you can buy separate, though it may be easier to get the whole unit, or two to match
     
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  4. Jupiter01

    Jupiter01

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    This light is run off the mains and doesn't have a driver.

    upload_2021-9-11_20-59-34.png

    I was hoping that this code will allow me to check the spec (wattage, lumens cut out size) but can't locate it.

    Can someone please advise on a suitable replacement. I will need a pair as I will switch out the working one too to ensure they are consistent. Also, this light is connected to the other light and gets it's connection from that. The loop is at the other light. Hope that makes sense...

    Thanks in advance.
     
  5. flameport

    flameport

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    GU10, not integrated.

    New lamp required.
     
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  6. RandomGrinch

    RandomGrinch

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    What you have in your hand is a weather protected (IP65 rated) enclosure for a GU10 bulb.
    You should be able to undo the enclosure and get the GU10 bulb out.
    Details of the bulb should help you choose the new ones (best to replace both!).
     
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  7. bernardgreen

    bernardgreen

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    I assume you have tried

    upload_2021-9-11_21-42-59.png

    https://www.lumanor.com/frc-ip20ip65

    It would seem the power supply in the can will supply up to a maximum of 50 Watts of power to what ever LED ( or other technology ) lamp is fitted to it.

    The lamp determining how much power it uses.

    The main cause of LEDs going dim is the slow destruction of the LED element by driving it above it's safe maximum power dissipation.
     
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  9. Jupiter01

    Jupiter01

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    I will get a couple of bulbs from Toolstation tomorrow. Thanks so much guys.

    Appreciate the prompt responses.
     
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  10. RandomGrinch

    RandomGrinch

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    Although you may want to check you can get into the enclosure first! ;)
    Good luck!
     
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  11. Harry Bloomfield

    Harry Bloomfield

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    An issue I have found in my caravan, which I converted to LED some years ago, is that LED draws so little current that poor/ high resistance connections can cause them to dim. It might be worth pulling the lamp out and re-plug it a few times just in case.
     
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  12. Jupiter01

    Jupiter01

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    I was wondering whether it’s worth checking the connection in the master light. This is the slave light on the same switch. I think I am using the right terminology.
     
  13. 333rocky333

    333rocky333

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    Think you are worrying too much :), 3.5 years for a Led Gu10 lamp is not bad.
    Technology is better now, change both lamps and they will likely match.
    The led has such a wide supply voltage not sure an extra few metres of cable from the first light would make any difference.
    You could just open both fittings and swop the 2 lamps over and the dim bulb will likely still be the same in the other fitting.
     
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  14. Jupiter01

    Jupiter01

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    UPDATE - I replaced both bulbs with a new led bulb today. As soon as I did this, I can see that both bulbs are equally lit now.

    Presumably, this confirms that I just had a dodgy bulb and the wiring is fine.

    Thanks for your help and this turned out easier than I first anticipated. It’s been bugging me for weeks!

    I’ve included pictures of the old bulb too.
     

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