Gu10 led bulb

[dan2002]

Hi there, how come my bathroom spotlights suddenly go from a normal colour to a pink light? Is the lights faulty? The Gu10 bulbs are ‘’Maxim’ brand.

 

[RandomGrinch]

How old are the bulbs?
Are you sure they are LED and not halogen?
Has the colour change been permanent, or does it occur after the light has been on for a while?

If they are LED, (among other degradation processes) the packages can suffer from colour shift. A red shift is possibly caused by a reduction in output from the green component of the phosphor coating.

However, a colour shift normally occurs almost imperceptibly over time - and a blue shift is far more common.

Spot damage to individual LED packages, or changes to the optical quality of the bulb, could also lead to chromaticity changes.

But, if the colour change occurs when the bulb is on, a change in output of the driver may be more likely. If the change is noticed over multiple spotlights, some loose wiring connections may be to blame.

Is the lights faulty?

Simply put, try a new bulb!


...and if anyone is interested in LED colour shift, some bedtime reading is attached!

 

[dan2002]

How old are the bulbs?
Are you sure they are LED and not halogen?
Has the colour change been permanent, or does it occur after the light has been on for a while?

If they are LED, (among other degradation processes) the packages can suffer from colour shift. A red shift is possibly caused by a reduction in output from the green component of the phosphor coating.

However, a colour shift normally occurs almost imperceptibly over time - and a blue shift is far more common.

Spot damage to individual LED packages, or changes to the optical quality of the bulb, could also lead to chromaticity changes.

But, if the colour change occurs when the bulb is on, a change in output of the driver may be more likely. If the change is noticed over multiple spotlights, some loose wiring connections may be to blame.


Simply put, try a new bulb!


...and if anyone is interested in LED colour shift, some bedtime reading is attached!

The bulbs were recently fitted. Has only been like 2 months. They are definitely LED Gu10 bulbs. The colour change happens after the light has been on for a few minutes. Sometimes its really bright and perfect, then after a few minutes it starts to slowly dim down and then at some point turn pink.

 

[RandomGrinch]

The colour change happens after the light has been on for a few minutes.

In that case,

Simply put, try a new bulb!

It could be a bad batch of bulbs. If it continues to happen with a new bulb, you will need to check the wiring and light fitting.

Was the fitting designed for LED bulbs?
Can you post a picture?

 

[dan2002]

Just fitted some GU10 led bulbs (Meridian) and they seem to be way more better and look great. Hopefully they last long!!!!

 

[333rocky333]

Are they wired to a dimmer switch, if so the lamps need to be compatible with the dimmer

 

[333rocky333]

Oh, just realised there in your bathroom, so dimmer switch unlikely

 

[JohnW2]

Oh, just realised there in your bathroom, so dimmer switch unlikely

I wouldn't put too much money on that - a neighbour of mine recently installed 'mood lighting' in his bathroom

Kind Regards, John

 

[RandomGrinch]

a neighbour of mine recently installed 'mood lighting' in his bathroom

My bath panel has remote dimming...
...and a disco effect, if I so wished!

 

[dan2002]

Are they wired to a dimmer switch, if so the lamps need to be compatible with the dimmer

Nope not a dimmer switch. Just a normal light switch

 

[dan2002]

I had another question. How come one of my spotlights there is a lot of water droplets by it? It sweats around the bulb. Its by the window side.