Shower extractor light replaced but not working - best next steps?

[Barzin]

Hi ... hopefully this is an easy one.
I have a shower extractor with 12v light fitting above the shower. The bulb recently went so I replaced it, but the replacement didn’t work (I assume the bulb is okay). I tried to get a multimeter to test and appeared to get no voltage but it was tricky to get the probes parallel into the holes so I’m not 100% if it was an accurate reading.

so...now I need to try something different. Is the best bet to replace the transformer? If this is the case how would I get to it? Is it a case of crawling through the loft space or am I likely to gain access through the extractor hole? Loft access isn’t easy so if I’m wondering if there’s something else to try first. I suppose I should check whether there’s something else I should check before the transformer too?

pic attached for reference - I didn’t install it so I’m unsure of the brand.

thanks in advance!

 

[terryplumb]

Check that you have the correct bulb. Tell us exactly what voltage AC or DC .

 

[Barzin]

Check that you have the correct bulb. Tell us exactly what voltage AC or DC .

12v MR16 5w ... it doesn’t specify AC/Dc on the box. But I think it says 50/60hz on the bulb so I guess it could be AC! I assumed it was DC because it said 12V with no other detail specified.

 

[terryplumb]

Do you have the old bulb to compare ?
The fitting states 12 v DC. You have a 12 v AC bulb .

 

[Barzin]

Do you have the old bulb to compare ?
The fitting states 12 v DC. You have a 12 v AC bulb .

I think the old bulb is gone with the bin men now!
The new bulb is this one, which (in the Q&A) claims to be DC or AC?!?
https://www.screwfix.com/p/enlite-gu5-3-mr16-led-light-bulb-500lm-5w/8010p

 

[terryplumb]

I would draw your attention to the specifications " check the suitability of your transformer ". The Q&A section Can be answered by anyone ,and isn't always correct.
Does the fan work ?

 

[Barzin]

I would draw your attention to the specifications " check the suitability of your transformer ". The Q&A section Can be answered by anyone ,and isn't always correct.
Does the fan work ?

The fan is fine. I assume the Q&A is correct because the response is from the manufacturer, Aurora. Unless the transformer can’t cope with a 5W bulb (I now notice that the spec says 3W...but I did choose this bulb because it was a similar spec to the old one, so I assumed it would be fine).

 

[Alec_t]

The luminaire specifies a 12V "Lamp type MR-16 LED 3W". Can't you get one?
Access to the LED driver (which may or may not be able to handle 5W) might be a matter of just pulling the luminaire downwards.

 

[Barzin]

The luminaire specifies a 12V "Lamp type MR-16 LED 3W". Can't you get one?
Access to the LED driver (which may or may not be able to handle 5W) might be a matter of just pulling the luminaire downwards.

I’m pretty sure I went to match the wattage of the bulb I was replacing, but maybe I didn’t manage (it was a few weeks ago now). 3W seem relatively uncommon but I guess I’ll give one a go to see before taking the ceiling unit apart. Seems odd to me to have a transformer with such a low rating to be honest.

 

[Luckyphil]

If it’s not the Transformer , it’ll be the Lampholder , these tend to corrode when in a Bathroom environment, you may get lucky and be able to pull the Unit down from the Ceiling to access the Transformer etc.