Christmas lights help!!

Chin85 · 19 Sep 2021

Early I know, but I got some new lights ages ago in advance of Christmas this year and I finally got round to testing them.

to cut a very long story short, these are interconnecting fairy lights (image of the connection terminals attached) and I have a transformer to plug into the string of lights. The idea is they daisy chain.
For some reason, the lights are not working! I know the transformer is working and I’ve tried 2x these sets of lights which are not.
can anyone help me please? The lights and transformer are from the same manufacturer.
Thanks
James

ericmark · 19 Sep 2021

It would seem all lights in parallel, not sure about

Chin85 said:
The idea is they daisy chain.

I have some Lidi smart lights, they have a link which seems to show you can add a second set, but the controller is only large enough for one set, the link is so you can cut the set into two, not so you can add more.

333rocky333 · 19 Sep 2021

are you pushing the connecter in the right way round, even with the flat edge they can sometimes go in wrong way.
Start by testing each run on its own, from the transformer

Chin85 · 19 Sep 2021

Thanks. Yeh they’re definitely in correctly. I can screw the cap.

Is the transformer underpowered for the lights ? Could that be causing the issue?

winston1 · 19 Sep 2021

Chin85 said:
Is the transformer underpowered for the lights ?

Your lights are rated at 0.75watts. The power supply (not transformer) is rated at 1.5 watts. So it could supply 2 sets.

Chin85 · 19 Sep 2021

I was sort of hoping it would be as easy as someone saying the transformer isn’t powerful enough. but good to know they should work with that.
the mystery continues!

winston1 · 19 Sep 2021

Chin85 said:
I was sort of hoping it would be as easy as someone saying the transformer isn’t powerful enough. but good to know they should work with that.
the mystery continues!

As I said it is a power supply not a transformer. Why would you think they would supply one not powerful enough?

Chin85 · 19 Sep 2021

The ‘power supply’ is from a different set of lights. They weren’t supplied together.

winston1 · 19 Sep 2021

Chin85 said:
The ‘power supply’ is from a different set of lights. They weren’t supplied together.

With this info I looked closely at the label on the lights. It says it needs a 31 volt supply. Yours is 5 volt. No wonder they don't work.

Chin85 · 19 Sep 2021

Amazing. Thank you. My knowledge of electrics is zero (hence you having to correct my language) so at least I know now that I need a more powerful supply!

winston1 · 19 Sep 2021

Chin85 said:
Amazing. Thank you. My knowledge of electrics is zero (hence you having to correct my language) so at least I know now that I need a more powerful supply!

Not actually more powerful but the correct voltage. The label on the lights give a web address where you can order one from.

Chin85 · 19 Sep 2021

Thank you. could I check please, would this work?
(the website i got the lights from is out of stock so this is an eBay special)

winston1 · 19 Sep 2021

Well it is the right voltage and has sufficient power so I assume it will be OK.

Chin85 · 19 Sep 2021

Thank you v much. Will give it a try for a fiver!

SUNRAY · 20 Sep 2021

What a nice surprise. 5 useful and pleasant posts from winston.

So unexpected, thank you.

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Christmas lights help!!

Chin85

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