DIY Doctor

Cabinet lighting - help needed with electrics/controller

Postby arcadian » Sun Feb 21, 2021 5:57 pm

This is my first post on the forum, would be very grateful for any help or assistance!

Recently moved into a property, and the kitchen cabinet lights cycle between on and off (about 3-4 times, every half a second) when you turn then on, and then stay off. I have tried changing bulbs, but I wonder if it is an issue with the transformer or light controller?

The lights seem supplied by a telephone (yes telephone) cable from a separate transformer/light controller device.

Is this faulty? Should I just change it?

Many thanks
Attachments
light1.jpg
light 2.jpg
light 3.jpg
?Transformer/controller with telephone cable supplying the cabinet lights
arcadian
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Sun Feb 21, 2021 5:43 pm


Sponsor

Simply Build It

Postby Mr White » Sun Feb 21, 2021 8:58 pm

Without being there to actually test it, all anyone can do is guess.

It sounds like the "power supply" is switching off to protect itself.
But why, I do not know, it may be there are too many lamps / over rated lamps, you do not say how many lamps there are and what the rating of those lamps is.
Mr White
Rank: Site Agent
Progress to next rank:
80.6%
Posts: 903
Joined: Tue Jun 20, 2017 9:54 pm


Postby arcadian » Sun Feb 21, 2021 9:42 pm

Thanks Mr White. They are 2 x led down lighters - see attached
Attachments
55AE9E6B-25BE-470E-BA86-9638C884971E.jpeg
55AE9E6B-25BE-470E-BA86-9638C884971E.jpeg (25.33 KiB) Viewed 144 times
56463DFC-8107-4339-BDC5-0825644FDA24.jpeg
56463DFC-8107-4339-BDC5-0825644FDA24.jpeg (14.34 KiB) Viewed 144 times
arcadian
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Sun Feb 21, 2021 5:43 pm


Postby chriscba » Wed Feb 24, 2021 10:24 am

I would invest in a new set up, they look shot
chriscba
Rank: Ganger
Progress to next rank:
31.3%
Posts: 97
Joined: Thu Aug 27, 2009 10:00 pm


Postby ericmark » Wed Feb 24, 2021 12:42 pm

Likely the electronic transformer has a minimum output and new bulbs are under that minimum output, so new toroidal transformer with 50 Hz output, or an electronic transformer that goes down to zero or a driver at fixed voltage, or swap lamps for low voltage instead of extra low voltage and do away with the voltage dropper.

With quartz lamps the thicker the filament longer they lasted and the more stable the voltage the longer they lasted so good reason for 12 volt, but with LED that is no longer the case, so 230 volt is far better.
ericmark
Rank: Project Manager
Posts: 2544
Joined: Fri Oct 02, 2009 8:49 pm
Location: Llanfair Caereinion, Mid Wales.


Postby ericmark » Wed Feb 24, 2021 12:50 pm

Note except for USA 12 volt is extra low voltage, and 230 volt is low voltage, only in USA is 12 volt called low voltage, but seems they speak a sort of English so often you get items which are extra low voltage marked as low voltage.

All LED lights seem to have a problem with labels, they do not say if leak resistor fitted or smoothing capacitor fitted, so until you try them you don't know if they will flash or pulse, however with small LED bulbs (physical size) there is no room to fit leak resistors and smoothing capacitors so better to select the larger types.
ericmark
Rank: Project Manager
Posts: 2544
Joined: Fri Oct 02, 2009 8:49 pm
Location: Llanfair Caereinion, Mid Wales.



Display posts from previous
Sort by
Order by



  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!


 
  • Related Topics