18 February 2011, 04:11 | #1 |
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. |
18 February 2011, 04:46 | #2 |
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, 05:01 | #3 | |
Registered User
Join Date: Aug 2008
Location: London / Canada
Posts: 781
|
Quote:
Thanks! |
|
18 February 2011, 05:45 | #4 |
Amiga life crisis
Join Date: Feb 2010
Location: Sydney/Australia
Age: 54
Posts: 256
|
Is it hard or soft ?
|
18 February 2011, 06:08 | #5 |
Registered User
Join Date: Aug 2008
Location: London / Canada
Posts: 781
|
|
18 February 2011, 07:02 | #6 |
-
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 |
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 |
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 |
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 |
Registered User
Join Date: Jun 2010
Location: PL?
Posts: 2,743
|
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 |
PSPUAE DEV
|
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, 16:57 | #12 |
Registered User
Join Date: Aug 2008
Location: London / Canada
Posts: 781
|
|
18 February 2011, 18:17 | #13 |
PSPUAE DEV
|
|
18 February 2011, 18:43 | #14 |
Registered User
Join Date: Jun 2010
Location: PL?
Posts: 2,743
|
looks like poor camera sensor (debayer fail with low light?)
|
18 February 2011, 21:13 | #15 | |
Registered User
Join Date: Aug 2008
Location: London / Canada
Posts: 781
|
Quote:
I had to shine a flash light on the board to get light and try to take the picture at the same time. |
|
19 February 2011, 05:31 | #16 |
I hate potatos and shirts
|
The capacitor is leaking (see the grey colour on the pads). The red thing is SMD glue.
Swap it. |
19 February 2011, 07:51 | #17 |
Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,337
|
|
19 February 2011, 11:59 | #18 |
Registered User
Join Date: Jun 2010
Location: PL?
Posts: 2,743
|
IMO cap is ok - picture such quality like this can be confusing
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
another leaking cap question, advice on whether to replace or not | systmcrsh | support.Hardware | 21 | 21 September 2010 21:49 |
problem with A500+, leaking batt.. | orange | Hardware mods | 17 | 27 June 2010 14:11 |
Leaking audio caps in A4000 | MagerValp | support.Hardware | 5 | 18 August 2009 21:16 |
what cap to use in 1d4 MB? | klx300r | support.Hardware | 10 | 02 July 2009 19:28 |
Leaking Batteries.... | THX1138 | support.Hardware | 74 | 07 June 2005 21:11 |
|
|