Is this a leaking cap?

DarrenHD · 18 February 2011, 04:11

This is a photo from inside my Escom A4000T. What is that red stuff?

Is it the cap leaking? It looks like some sort of resin.

kipper2k · 18 February 2011, 04:46

It probably is a resin of some sort. Board manufacturers sometimes use a resin or adhesive sometimes to hold the components in place just prior to them being soldered

DarrenHD · 18 February 2011, 05:01

Quote:

Originally Posted by kipper2k

It probably is a resin of some sort. Board manufacturers sometimes use a resin or adhesive sometimes to hold the components in place just prior to them being soldered

It doesn't really look similar to other leaking caps I've seen and it's not getting "worse", so hopefully it is just resin.

Thanks!

Kakaboy · 18 February 2011, 05:45

Is it hard or soft ?

DarrenHD · 18 February 2011, 06:08

Quote:

Originally Posted by Kakaboy

Is it hard or soft ?

I didn't touch it... :-/ it does seem to be translucent, since you can see part of a trace below it.

Jope · 18 February 2011, 07:02

Definitely not electrolyte. It's probably just glue.

Damion · 18 February 2011, 08:52

I agree with the others, looks nothing like cap leakage.

Bloodwych · 18 February 2011, 09:41

Jam Sarnie whilst working on your 'miggy?

Loedown · 18 February 2011, 12:11

On boards that use dual sides, most resistors and smaller caps are placed on the board using a glue, so that when the cards go through reflow ovens or reflow solder wave equipment nothing falls off.

I've not seen an electrolytic been glued before but there's no reason why it cannot be, this is 100% glue and not leakage in any way.

http://img.alibaba.com/img/imagerepo...-web1_7950.jpg

http://www.electronics-trading.com/Image/cartridge.jpg

You will most likely find two or four dots somewhere on the board from when the adhesive was applied in the first place, one of the companies that I worked for used to use a Universal GSM only for this purpose and only ever on a few boards.

http://i.ytimg.com/vi/gjsLktISVAE/0.jpg

pandy71 · 18 February 2011, 12:25

Glue for SMD part - each SMD is glued to PCB before soldering - without glue it simply fall from PCB (valid for wave soldering - when IR and similar methods are used for soldering glue in theory is not needed - solder past should be enough but anyway glue is used sometimes, also glue is required for two side component populated boards for bigger SMD, small ones are stay due of solder own surface tension)

FOL · 18 February 2011, 12:48

Whooops, could'nt see whole of picture,

.
I would agree with others, now I can actually see the cap on the right side of picture,

.

DarrenHD · 18 February 2011, 16:57

Quote:

Originally Posted by FOL

Whooops, could'nt see whole of picture,

.
I would agree with others, now I can actually see the cap on the right side of picture,

.

Thanks for the reply guys...I think the consensus is that it is not leaking

Good news

FOL · 18 February 2011, 18:17

Quote:

Originally Posted by DarrenHD

Thanks for the reply guys...I think the consensus is that it is not leaking

Good news

Whats the green stuff on C263A?

Thats the cap I was originally looking at, thought everyone was going nuts, cause I could'nt see the red stuff, lol.

pandy71 · 18 February 2011, 18:43

looks like poor camera sensor (debayer fail with low light?)

DarrenHD · 18 February 2011, 21:13

Quote:

Originally Posted by FOL

Whats the green stuff on C263A?

Thats the cap I was originally looking at, thought everyone was going nuts, cause I could'nt see the red stuff, lol.

Hmm not sure, could just be the camera...was taken with an iPhone 3GS...(eg. crap camera, no flash).

I had to shine a flash light on the board to get light and try to take the picture at the same time.

rkauer · 19 February 2011, 05:31

The capacitor is leaking (see the grey colour on the pads). The red thing is SMD glue.

Swap it.

alexh · 19 February 2011, 07:51

Quote:

Originally Posted by rkauer

The capacitor is leaking (see the grey colour on the pads).

You cannot tell from the photo. It might be rust from a leaking capacitor. Might be shadows on the photo and just be the soldering.

pandy71 · 19 February 2011, 11:59

IMO cap is ok - picture such quality like this can be confusing

18 February 2011, 04:11	#1
DarrenHD Registered User Join Date: Aug 2008 Location: London / Canada Posts: 781	Is this a leaking cap? This is a photo from inside my Escom A4000T. What is that red stuff? Is it the cap leaking? It looks like some sort of resin. Last edited by DarrenHD; 18 February 2011 at 04:22.

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18 February 2011, 04:46	#2
kipper2k Registered User Join Date: Sep 2006 Location: Thunder Bay, Canada Posts: 4,323	It probably is a resin of some sort. Board manufacturers sometimes use a resin or adhesive sometimes to hold the components in place just prior to them being soldered

18 February 2011, 05:45	#4
Kakaboy Amiga life crisis Join Date: Feb 2010 Location: Sydney/Australia Age: 54 Posts: 256	Is it hard or soft ?

18 February 2011, 07:02	#6
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Definitely not electrolyte. It's probably just glue.

18 February 2011, 08:52	#7
Damion Registered User Join Date: Mar 2008 Location: US Posts: 315	I agree with the others, looks nothing like cap leakage.

18 February 2011, 09:41	#8
Bloodwych Moderator Join Date: Jun 2001 Location: I'm behind you! Posts: 3,763	Jam Sarnie whilst working on your 'miggy?

18 February 2011, 12:11	#9
Loedown Precious & fragile things Join Date: Feb 2009 Location: Victoria, Australia Posts: 1,946	On boards that use dual sides, most resistors and smaller caps are placed on the board using a glue, so that when the cards go through reflow ovens or reflow solder wave equipment nothing falls off. I've not seen an electrolytic been glued before but there's no reason why it cannot be, this is 100% glue and not leakage in any way. http://img.alibaba.com/img/imagerepo...-web1_7950.jpg http://www.electronics-trading.com/Image/cartridge.jpg You will most likely find two or four dots somewhere on the board from when the adhesive was applied in the first place, one of the companies that I worked for used to use a Universal GSM only for this purpose and only ever on a few boards. http://i.ytimg.com/vi/gjsLktISVAE/0.jpg

18 February 2011, 12:25	#10
pandy71 Registered User Join Date: Jun 2010 Location: PL? Posts: 2,741	Glue for SMD part - each SMD is glued to PCB before soldering - without glue it simply fall from PCB (valid for wave soldering - when IR and similar methods are used for soldering glue in theory is not needed - solder past should be enough but anyway glue is used sometimes, also glue is required for two side component populated boards for bigger SMD, small ones are stay due of solder own surface tension)

18 February 2011, 12:48	#11
FOL PSPUAE DEV Join Date: Nov 2006 Location: Wales / UK Age: 45 Posts: 5,999	Whooops, could'nt see whole of picture, . I would agree with others, now I can actually see the cap on the right side of picture, .

18 February 2011, 18:43	#14
pandy71 Registered User Join Date: Jun 2010 Location: PL? Posts: 2,741	looks like poor camera sensor (debayer fail with low light?)

19 February 2011, 05:31	#16
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	The capacitor is leaking (see the grey colour on the pads). The red thing is SMD glue. Swap it.

19 February 2011, 11:59	#18
pandy71 Registered User Join Date: Jun 2010 Location: PL? Posts: 2,741	IMO cap is ok - picture such quality like this can be confusing

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