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Will do. If it is just a corroded wire or a loose wire that's come out and it's clear enough which terminal it should be reconnected back into, am I ok to just strip it back and reconnect it without turning off the lighting circuit in the house that the alarm is powered by? And if I do connect...

I've reconnected it so everything is back to the way it was. I'll brave the elements and get the long ladders out tomorrow. I'll take the front off the sounder, take a photo and will report back then. Thanks very much for your help so far today. It's much appreciated. If it's just a corroded...

I connected the blue wire back in and then disconnected the red one. The external sounder did not sound. I am assuming I didn't need to try the red wire in one of the other terminals did I?

Did that. The external sounder did not sound.

Yes, that is correct. The green and white cables are not connected to anything. I'll disconnect the blue cable now and put it into where the black cable is connected into the OV terminal, as you highlighted with the red arrows

Ok but just before I do, the alarm system is wired on my downstairs lighting circuit. Do I need to turn that circuit off before I disconnect any wires inside the PSU?

You say "remove bell trip cable in main control panel and touch it on 0v in panel …..Does it sound ?" Apologies but I don't know what any of that means. When you say "main control panel" are you referring to what I described as the PSU in my Post #4 above and as shown in the photo below...

Yes, everything had always worked perfectly. I only noticed recently that it had stopped sounding outside for some unknown reason but, I couldn't be sure when this issue actually started as the alarm just used to get set on the way out and unset on the way back in again, but it definitely...

Thanks again. I have just activated the alarm once more. When the alarm sounded inside the house I went outside. I could see the red lights flashing alternately (which was the same as when the alarm was not activated) then after around 40 seconds, the blue strobe light in between the two red...

Many thanks for your reply. Yes that one top left looks like my sounder, other than mine has what I assume are two screw holes just above the dark blue coloured cover, presumably to fix the front face to the sounder back. I have attached a photo of my alarm panel below and a photo of the PSU...

My home security alarm is working fine other than the sounder doesn’t sound! If I activate the alarm, I hear it inside the house but there is no sound outside from the sounder. I don’t know what make the sounder is but I have attached an image of it below. It's a wired system and I can see a...

Thanks for all your replies mrrusty, you've been very helpful. I'll give the repairs a go.

Sorry, I wasn't suggesting trying to sand it back once it had actually set. I meant rubbing down the smaller repairs with say a plastic float before it's set ie when it's just starting to go off. I was trying to establish if that is possible with sbr in the mix?

Ok, thanks for taking the time to reply. I'll make-up the timber formwork and give it a go doing it all at once. What's the worst that can happen :oops: As I said, I haven't used sbr before and in addition to the large repair shown in the photographs in my original post, I also have some other...

Thankyou for your reply. What aggregrate would you suggest I would be best to use in the mortar mix? Red sand, sharp sand, mersey grit, grano or something else and what ratio of aggregrate to cement should I gauge. I will clean the sandstone off first and will then coat the areas that are...

Does anyone have any views, alternatives or advice on what I am proposing to do?

I need to repair the damaged/missing sections of the sandstone window cills to the bay window shown. The cills have unfortunately not been maintained by the previous owner and have deteriorated to the extent that they have crumbled and fallen away in places :( I was thinking of doing the...

Yes, the switch in the Hall is a) almost directly below the existing switch on the Landing by the Front Bedroom door and b) closer to the new two gang switch location between the Bathroom and Middle Bedroom doors.