Small Capacitors: What Numbers Critical?

On Monday, April 7, 2014 1:34:13 PM UTC-4, (PeteCresswell) wrote:

Per dave:



Is this an electrolytic? Polarized?



I can't find any indication of polarity.



I'm not sure what constitutes electrolytic, but when they failed a

brownish goo leaked out and solidified.



Here are a couple of pix:



http://tinyurl.com/manvbbg

Ahh it looks like one lead of the cap is not soldered into the pcb...
(or maybe the solder is only on the other side.)

George H.

http://tinyurl.com/n82vgpj





--

Pete Cresswell

 

[(PeteCresswell)]

Per Arfa Daily:

That 'leaked goo' is just glue that the manufacturer has used to stick a
radial cap down to the PCB so that it 'pretends' to be an axial type....

If you are basing your belief that the cap is faulty on what you perceived
to be something that had leaked out from within, then there's a very good
chance that you are mistaken.

Ok, that cuts it. Forget about DigiKey. I'm in this way waaaaay over
my head.

Just trash these things and buy two more.
--
Pete Cresswell

 

[Baron]

ggherold@gmail.com scribbled thus:

Did anyone notice that the picture location was displayed on Google
Maps !!!

On Monday, April 7, 2014 1:34:13 PM UTC-4, (PeteCresswell) wrote:
Per dave:



Is this an electrolytic? Polarized?



I can't find any indication of polarity.



I'm not sure what constitutes electrolytic, but when they failed a

brownish goo leaked out and solidified.



Here are a couple of pix:



http://tinyurl.com/manvbbg
Ahh it looks like one lead of the cap is not soldered into the pcb...
(or maybe the solder is only on the other side.)

George H.

http://tinyurl.com/n82vgpj

--

Pete Cresswell

--
Best Regards:
Baron.

 

[Jeff Liebermann]

On Tue, 08 Apr 2014 09:16:56 -0400, "(PeteCresswell)" <x@y.Invalid>
wrote:

Per Arfa Daily:
That 'leaked goo' is just glue that the manufacturer has used to stick a
radial cap down to the PCB so that it 'pretends' to be an axial type....

If you are basing your belief that the cap is faulty on what you perceived
to be something that had leaked out from within, then there's a very good
chance that you are mistaken.

Ok, that cuts it. Forget about DigiKey. I'm in this way waaaaay over
my head.

You can fix it with a pair of pliers. The yellow/brown goo becomes
conductive after it's been baked for a while. I haven't found a good
solvent that softens it yet, that also doesn't destroy components,
solder mask, or the PCB. My guess(tm) is that the yellow goo is
shorting out something on the PCB under the goo. Do whatever it takes
to remove the stuff and see if the camera recovers.

If you break the capacitor, I think you can afford these:
<http://www.ebay.com/itm/321317467092> $3.19 plus $1.00 shipping.

>Just trash these things and buy two more.

<http://www.ifixit.com/Manifesto>
Tossing repairable devices should be a capital crime.


--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

 

Jeff, forget about solvents, the best way to get rid of it is like a dental pick.

Then it shoots across the room never to be found UNLESS it is in your house in which case you will find it next time you go to the workshop barefoot.

Then the language gets interesting, like - "MOFOUNGAWASKAKMAKYA !".

In which case the Enlish translation is "There it is, and now, where is that fucking AK47 I had stashed around here somewhere ?". For a sp[lit second your mind wants to go kill the guy who brought that infestatious motherfucker into your sweet abode. Roaches would be better.

And I actually necver saw the movie "Falling Down".

 

To add here, sometimes you get just the right bite on that shit with the pliers and the whole big goop of it comes off nice and clean. Just hope you see nice green copoper under it...

 

[Jeff Liebermann]

On Wed, 9 Apr 2014 20:45:58 -0700 (PDT), jurb6006@gmail.com wrote:

To add here, sometimes you get just the right bite on that shit
with the pliers and the whole big goop of it comes off nice
and clean. Just hope you see nice green copoper under it...

Yeah, that's how I usually end up doing it. If the yellow/brown goo
is stuck mostly to a PCB covered with green solder mask, the solder
mask will typically flake off and go with the goo. However, if the
goo covers components, wires, or bare PCB, chances of destroying
everything under the goo is highly likely.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558