So I just built a new desktop computer and when I play some games I hear a slight electrical squeal noise for a minute while the game loads then the sound goes away. I noticed this sound over the last couple days only right now its followed by an odd dullish, headache inducing smell. This isnt the first time I've smelt this smell from a computer and I'm curious if this is actually a symptom of a bad or blown cap. I haven't inspected yet but soon will. Any thoughts on this?
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Re: Do bad capacitors stink?
leaking caps smell like cat piss,
look inside your psu -
Re: Do bad capacitors stink?
I’ve had caps new in the sealed bag smell like rotting fish. They were samples I was supposed to evaluate, but the stench made that unnecessary.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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Re: Do bad capacitors stink?
thanks for the clarification guys, cheers.Comment
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Re: Do bad capacitors stink?
Yes, bad (leaked / vented) electrolytic capacitors can (and usually do) stink... and at least not in any good way I can think of. It's not like "burned/toasty electronics" type of smell, though. More organic.
As to the relation of that and the new desktop PC you build... I doubt you'd be having new caps leaking/venting this soon, even if they are cheapo brands... but I guess it is still possible. Without knowing more details about the hardware (particularly PSU brand, model, and production date) and age of the hardware (if motherboard or GPU is anything from the last 5-8 years or so, chances are it uses solid polymer capacitors, and those won't leak or vent, so they won't smell... unless they failed - which you would notice because they would produce a ton of smoke and/or short-circuit), I can't tell you more if that's what you're experiencing or not... but probably not, unless you're running a really cheap no-name PSU. With those, you never know what kind of surprises could be inside.
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Re: Do bad capacitors stink?
Just pulled some Chemicon SXFs. The electrolyte is puddled all over the PCB. Nasty stink as well!Comment
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Re: Do bad capacitors stink?
Check for spiders and webs on the motherboard and cards. Same with earwigs and house centipedes. (house centipedes are usually only seen in downtown areas)
I have yet to see a house centipede at the current house, as I'm outside of downtown Springfield, but still in Springfield. On Main St. in Springfield, OTOH, I regularly saw them.
But the dreaded earwigs are a common sight, right when I hoped that I wouldn't even see those tiny bastards! I'm outside of downtown enough to have earwig issues.
Earwigs are the bugs that are associated with wetter-than-normal weather. (like the years 2006 and 2011 in New England)Last edited by RJARRRPCGP; 11-02-2021, 04:29 PM.ASRock B550 PG Velocita
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Re: Do bad capacitors stink?
I came home to electrolytic capacitor stink for months, then it went away, then it came back. Gutted all my equipment to find it and eventually it was the ZyXEL DSL modem supplied by my ISP.
Inside is two huge 3,300uF caps and one had popped, so I exchanged it for a newer modem.
On another occasion it was an LED nightlight that popped a capacitor and made that dreaded stink.
For a new PC build, they off-gas all kinds of stink for a month or so. The power supply is the worst, fiberglass resins, glue curing etc.Last edited by redwire; 11-02-2021, 05:02 PM.Comment
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Re: Do bad capacitors stink?
For some reason, I like the smell of fresh motherboards! Especially the Asus Sabertooth 990FX R 2.0 that I got in summer, 2015. It's funny and punny how I literally like the smell of fresh motherboards during the morning!
Noticed that scent, when I was opening the motherboard package! (and afterwards)
It's not like fried electronics, which the smell of that, if believed to be from my PC, would make me panic!Last edited by RJARRRPCGP; 11-02-2021, 06:40 PM.ASRock B550 PG Velocita
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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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Hi, I have some 32 bits computer motherboards that need repair, as they fail to
power on.
Here are some examples :
(N.B. "capacitors" indicated here are electrolytic capacitors located in the onboard
switching supply area).
(N.B. #2 : I could not find a 3300 microF aluminum-polymer with a higher voltage
than 6.3 V.)
1 - Motherboard #1 : this is an Asrock K7VT2 (socket A) that still works well. To put it on test
I replaced capacitors with aluminum-polymer.
3300 microF/6.3 V. x 4 replaced by 3300 microF/6.3 V. (KYOCERA... -
hey all, iv got my favourite battery charger here which iv had for many years probably 15 years now or maybe even more. it still works good but thought id open it up to clean the dust out of it, lots of dust inside but now its clean and noticed 4 capacitors inside it and wondered if i should replace them.
it has inside:
2 x 47uf 16v caps 105c branded as Su'scon (lol sounds sus to me)
2 x 470uf 16v LZ105c branded as G.Luxon
not heard of these brands are they any good?
iv attached photos of the charger and the board inside for an idea on the type of... -
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of... -
I have a 2007-era Panasonic VHS combo that is full of of Elna RJG capacitors. I am trying to test the capacitors to diagnose the machine and then select replacement capacitors but I can not find any datasheets for them. I did find a Elna catalogue from 2007-2008 but there is no mention of this capacitor series. Where these specially made for Panasonic and so not made available to the public? Any ideas what to find out what the ESR values should be without the datasheets? They are all between 10V and 50V and 47uF and 1800uF. None are leaking or bulged but I know that they need to be tested to be... -
I picked up a 70" Samsung UN70TU7000WXZA. The original owner said they were watching it when the power surged and knocked it out. I pulled the back off the TV and disconnected the main board from the power board, and the LED backlight came on, which I was told meant the power board was good. When everything is plugged in the standby light will not come on, looking at the main board BN94-17775A with a thermal imaging gun I can see one of the chips labeled 3202 is 251 degrees F just sitting idle. I found a replacement board, BN94-16115X; this board has the same symptoms, except it is a different...
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