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 .
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 .
Nah mate. The transformer is usually used as an inductor for the switch mode conversion.
It looks like you have it right though. The big brown cap should be rated for 250v + and will be on the mains AC side.
The DC side will have lower voltage rated smoothing caps.
Post the link to the device or better photos and I’ll have a closer look for you.
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.
@DiaDeLosMuertos
Bugger! I would never have considered opening the device to check the internal connection before hooking it up. Ouch. You had a word with the supplier?
The lady that purchased them made a complaint straight away on Saturday morning. I messaged her yesterday to confess that it was possibly and partially my mistake. She said not to worry as she considers them a fire risk anyway. I asked her to keep them so I could have another look but she’s thrown them in the bin. Off to Bunnings for her next.