Radio interference from downlights

[Richard Burns]

I have just had a customer who is getting radio interference (not sure if this is new or has been going on all the time)when one set of downlights in the Kitchen is turned on.

This is four 50W 12V downlights, they are wired with two 105W transformers in a kitchen cupboard each transformer supplying two downlights wired in flex.

I am initially assuming that because the flex run is over 2M this is the "antenna" causing the interference.
However if this is a new occurrence it may be the Tx breaking down.

If I replace the txs would this have no effect (or make things worse)?

would the better solution be to supply each downlight with its own local tx, utilising the existing flex reconnected to 230V, access a bit difficult but should be OK.

Am I barking up the wrong tree entirely?

Thanks

 

[Richard Burns]

Huh, quick update, bought £100 of transformers, go in loaded for bear, just explaining to the daughter what the fault is, switch on the radio and then switch on the lights... absolute silence; no interference at all!! Feel like a total fool, but what can you do?

Thanks for your help.

 

[Marvo]

If the problem is intermittent maybe it's a loose connection somewhere on the circuit.

 

[topquark]

Or maybe someone has changed the radio channel