I changed two controllers/transformers earlier for a friend. I was there to do six. I connected the first two and well, they blew up .
this post was submitted on 21 Jun 2025
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I'm seriously thinking that I got it backwards. I connected it according to the writing on the enclosure. But as TRK said, he has had them back to front due to the same thing. The guts can be placed into the enclosure either way and I reckon that's what's happened.
I left them at my friends house also.
@DiaDeLosMuertos @Dimand
The L and N are for Live and Neutral - the 240V end. The small black chip is a bridge rectifier with its big brown capacitor.
Oh I hear you mate. The thing is that the unit was closed up with the markings for mains and output clearly marked on the casing. After reading TRK 's input, I think that the guts were placed the wrong way around.
Basically I connected the 240 to the DC output terminals.
I contacted my friend earlier to explain this. I admitted that it was my error even though I followed the markings on the casing.
She's ok about it and has thrown them all away.