Light sensitive relay
 

Can anyone identify the make/model of this relay? - looks like the one controlling my porch lights has died - if I get one the same, then swapping out should be easy, if it's different, it's harder :)

TIA

Re: Light sensitive relay
 

Judging by the amount of crud in there, I'd give it a blow out all the fluff off the LDR first (the round thing with a squiggly line across it).

If gunk (insects etc.) got in there, I suspect moisture will have too. That would kill it.

Re: Light sensitive relay
 

There was a fair bit of water in there, and it was making a buzzing noise, so I think it's dead - will know for sure tonight, when it gets dark

Re: Light sensitive relay
 

This is the part

https://uk.rs-online.com/web/p/non-l...elays/6804094/

Good luck for nothing else being dead on that funky board!

Re: Light sensitive relay
 

Thanks - sorry though - I meant the whole board is fried not just the relay bit. I need a whole new board.

Re: Light sensitive relay
 

https://www.tlc-direct.co.uk/Products/DNTWSW.html

one of these is what I need.

Re: Light sensitive relay
 

Not bothered fixing up the existing board? There's less than a fiver worth of components on there.

Replace the trigger IC, relay, that box pulse cap, the electrolytics and the photo resistor and clean it all up I reckon that should sort it.

Re: Light sensitive relay
 

In my experience if damp has compromised the PCB then changing the components is unlikely to fix it. I tried with a motion sensor lamp control and it never really worked properly.

Fiberglass PCBs are better but still no guarantees.

Re: Light sensitive relay
 

One of my jobs in The RAF was to clean circuit boards, with all their components fitted, in a sonic bath, Then dry them slowly in a huge oven. Not one failed to work afterwards, but that was pre-integrated circuits days.

Re: Light sensitive relay
 

It can be successful if the PCB is not compromised. (Charred or corroded) I remember a temperature controller (1/4 DIN) that had "fallen" in a vat of glucose.:dozey: The service engineer washed the bare PCBs in a bath of detergent and then Arklone and finally dried out in an low temperature oven. It worked afterwards.

Re: Light sensitive relay
 

Hmm... not really sure I have the time, patience or tools to do all of the things mentioned - I think I'll just replace it with a like for like component :)

Thanks all!