Optima compact alarm - clicking noise

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NorthnotNorth

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I've got an Optima compact alarm panel, with a siren in the kitchen. I came home today and the panel and bell were making a weird clicking noise. Entering codes did nothing. I disconnected the panel from mains and took the fuses out of the panel to check for any issues (no tamper alarm triggered when I took off the front panel). Checked two fuses, they were fine. Weirdly, taking out the bell/strobe fuse meant the panel stopped clicking and went mostly back to normal - even with mains off, when I put the panel back on I had to enter my code to stop a tamper alarm sounding. When I try to set the alarm now it just continues beeping though - never seems to be properly set.

Any guesses what's happening here? Is the siren in the kitchen on the blink?
 
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Battery last replaced ? Is the battery resistor burnt out ? Post pictures of pcb ...common issue on these have replaced loads due to battery not being changed ...
 
Thanks. Battery not replaced sine I moved in 18 months ago. Could this cause the issue? I thought it was likely the battery until removing a fuse had this effect.

Will post a pic tomorrow. It's at least silent now, so don't want to risk causing problems before bed!
 
NorthnotNorth said:
I disconnected the panel from mains and took the fuses out of the panel to check for any issues (no tamper alarm triggered when I took off the front panel)
Click to expand...

certainly sounds like no power to the alarm system, no mains(turned off) and no battery. when that was turned off nothing from the bell??

NorthnotNorth said:
mostly back to normal
Click to expand...
what does that mean?

NorthnotNorth said:
when I put the panel back on I had to enter my code to stop a tamper alarm sounding
Click to expand...
expected as there is now power to the system.


The picture is the starting point
 
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Thanks. Images are here https://photos.app.goo.gl/CeXNFBTH2gjfkoDG9 There's the whole PCB, and I've zoomed on on what I think is the battery, and the fuse I removed. Sorry, couldn't get them to upload to the forum.

With the bell/strobe fuse removed, the alarm has the spanner and unlocked LEDs lit up. Looking in the manual, I think this means a tamper alert has been triggered and it may need an engineer reset. If I turn off mains power to the alarm it stays powered up, and opening it needs my code entered to stop what I'm assuming is a tamper alarm.

With the bell/strobe fuse in place, the alarm doesn't seem to have power and sometimes makes a clicking noise through the speaker (similar to the noise my headphone amp makes when it's turned on and connected to headphones but its battery is flat, oddly!) Turning off mains doesn't make the alarm go off.

When I try to set the alarm now (with fuse removed) it just continues beeping - never seems to be properly set. Noises only come from the speaker in the panel rather than the bell in the kitchen (so I'd guess taking out the fuse has disconnected this).
 
From what you have described it sound if there is some short or high resistance on the bell or bell cable ...don’t like the look of that transformer either ...but the bell may have caused that issue ...remove the yellow and blue wires and replace with a wire link as per photo , this should clear the fault but you will have no external siren , next step post picture of external bell 3190D533-5CA2-4D04-B955-CE9E99ED7461.jpeg
 
That’s the internal one ...there must be another external one looking at how it is wired
 
Large flat blade screwdriver ...with a bit of luck it will come out ...BUT they can corrode and be a nightmare to get out, then509DFA8E-D0D8-48F4-8881-3C89594CA96B.jpeg it hooks off ...that’s not been off in years , I would have thought they would have changed it when the panel was changed !
 
Thanks - will try today or tomorrow. When the panel is off at the mains can I assume the external bell will be too?
 
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