In fire alarm systems (including panels) or security alarms?
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"¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo
"There's nothing more unattractive than a chick smoking a cigarette" -Topcat
"Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat
"did I see a chair fly? I think I did! Time for popcorn!" -ratdude747 -
Re: Anyone here that's ever saw bad caps or...
Spent ten years working my way thru a company called FireSystems.
Was on the drafting table, building the systems and lots of field troubleshooting.
The only panels with obvious heat failure,
were installed thru out King Kalib's military city.
The specs called for systems to be placed on the outside walls of each building.
The sun came up in the desert, the panels popped like pop corn, and we sold them new ones, but installed with air conditioning.
The other devices I noticed that did have a high failure rate were the RCA closed circuit pan tilt cameras I had put all over the IBM headquarters building. That was badcaps certainly, but 20 years ago I wouldn't have paid attention to that.
We were dealing Pyrotronics, Edwards and Fenwall halon systems.
No one I knew of had anything to say about capacitors specifically causing a fire panel to fail.Jim -
Re: Anyone here that's ever saw bad caps or...
OMG! Maybe I'm gonna see GSCs in fire alarm controller or smoke detector someday!
Or Lelons in a fire horn speaker so it sounds bad! LOL!
ASRock B550 PG Velocita
Ryzen 9 "Vermeer" 5900X
32 GB G.Skill RipJaws V F4-3200C16D-32GVR
Arc A770 16 GB
eVGA Supernova G3 750W
Western Digital Black SN850 1TB NVMe SSD
Alienware AW3423DWF OLED
"¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo
"There's nothing more unattractive than a chick smoking a cigarette" -Topcat
"Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat
"did I see a chair fly? I think I did! Time for popcorn!" -ratdude747Comment
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Re: Anyone here that's ever saw bad caps or...
Our smoke alarms always seem to go awry after a couple of years... either by not working or going off at 1AM for no reason
Tried cleaning them & new batteries but nothing ... Never tried opening them (couldn't figure out how)
I do remember somewhere someone recalling some because of some issue with the PCB and the tracks were degrading..
But 3 in a row? from different people/types ?"Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: Anyone here that's ever saw bad caps or...
We have 2 bright green Lelons here in our AC/Furnance main controller. I check them visually everytime I clean the filter. So far, they're still ok, but you can never know.Originally posted by RJARRRPCGPOr Lelons in a fire horn speaker so it sounds bad! LOL!Comment
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Re: Anyone here that's ever saw bad caps or...
If a fire alarm catches fire due to bad caps and alarms to warn you that it's on fire is that a success story?Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
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You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Comment
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Re: Anyone here that's ever saw bad caps or...
@ PCBONEZ: Yeah more or less... because you know, it can still be worse if it caught on fire and didn't alarm you.Comment
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Re: Anyone here that's ever saw bad caps or...
Hello,
I should have done a search for this because I have just posted about this very thing.
These are my smoke alarm caps:
Thankfully the alarm started beeping with its low charge warning but I was still surprised to find bad caps in something so important that lives could depend on them.
There are 5 in each unit on their own seperate PCB. I am in UK so using 230volts. If anyone could help identify them I would be very grateful.
Ian. Lancaster UK.Comment
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Re: Anyone here that's ever saw bad caps or...
That M symbol is Matsushita/Panasonic.
Good brand.
Probably died (if they even are bad) due to power surge or bad design.
You aren't showing the side with the series marking. (Or it's too light to read.)
It's usually two letters on those.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
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Re: Anyone here that's ever saw bad caps or...
There are no other markings. I've shown all that there is. I wonder if this is so that they can't be replaced or tampered with by unauthorised people.
I think it will probably be safer just to replace the alarm. The capacitor ones aren't cheap though.
Thanks for your reply.
Ian.Comment
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Re: Anyone here that's ever saw bad caps or...
Oooops.
On closer inspection I found this.
Sorry. They were quite well hidden though!
Ian.Comment
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Re: Anyone here that's ever saw bad caps or...
10 Farad? I wonder what the ESR is......
They are these - http://www.sparkfun.com/commerce/pro...roducts_id=746
Maplin used to stock them http://www.maplin.co.uk/Free_UK_Deli...tors_45511.htm for the bargain price (?) of £2.97, but I can't find them in their online catalog.
Oh, and yes, I've seen the same thing happen in exactly the same way in a mains powered smoke alarm.Comment
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Re: Anyone here that's ever saw bad caps or...
Panasonic Gold Cap Super-caps fail by bulging? That's worth noting. How does the thing recharge anyway? The mains charge circuit should also be considered suspect.Comment
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Re: Anyone here that's ever saw bad caps or...
I've actually replaced the alarm now. It was 9 years old and it seems it was due for renewal anyway. I didn't realise these things had a life expectancy and I suspect there are thousands of other people out there who don't know either.Originally posted by linuxguru
I have two more of these alarms though and will be replacing them too so I will also inspect those to see if the caps in them have also gone or if it was a faulty alarm which caused it. There are 5 caps in each alarm and of the five in this unit three were bulging, one of them very badly.
I have no knowledge of how the charging cicuit works, sorry.
Cheers,
Ian.Comment
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Re: Anyone here that's ever saw bad caps or...
Looks like this one (Simplex 4100u) has some Nichicon caps:
http://www.youtube.com/watch?v=CzJtBOphmawASRock B550 PG Velocita
Ryzen 9 "Vermeer" 5900X
32 GB G.Skill RipJaws V F4-3200C16D-32GVR
Arc A770 16 GB
eVGA Supernova G3 750W
Western Digital Black SN850 1TB NVMe SSD
Alienware AW3423DWF OLED
"¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo
"There's nothing more unattractive than a chick smoking a cigarette" -Topcat
"Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat
"did I see a chair fly? I think I did! Time for popcorn!" -ratdude747Comment
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