Personal computing discussed

Moderators: Flying Fox, Thresher

 
SoM
Gerbil Elite
Topic Author
Posts: 556
Joined: Wed Jan 26, 2011 11:56 am
Location: Toronto

decided to dust off

Wed Dec 13, 2017 2:41 pm

the pc, since it's still warm outside -8C, and noticed this earlier but today decided to snap a pic of the back of mobo cpu socket, the melted looking stuff, middle and right middle to bottom is where the VRM's are, system spec in sig.

some potato quality, was in a rush :p

i foresee a new mobo in the near future looks like, if not caps now this (caps) long time ago i know

Image

Win 10
InWin 303
Asus z170a
i7-6700k - H60
G.Skill 2x16GB 2400
M.2 950 Pro 256GB
EVGA GTX 1070 FTW
EVGA Supernova G2 750w
Acer XG270HU
HD 280pro
 
Convert
Grand Gerbil Poohbah
Posts: 3428
Joined: Fri Nov 14, 2003 6:47 am

Re: decided to dust off

Wed Dec 13, 2017 6:18 pm

I must be missing something.
Tachyonic Karma: Future decisions traveling backwards in time to smite you now.
 
Usacomp2k3
Gerbil God
Posts: 22256
Joined: Thu Apr 01, 2004 4:53 pm
Location: Orlando, FL
Contact:

Re: decided to dust off

Wed Dec 13, 2017 7:06 pm

Convert wrote:
I must be missing something.

I'm guessing a picture. I don't see it either.
 
just brew it!
Gold subscriber
Administrator
Posts: 51655
Joined: Tue Aug 20, 2002 10:51 pm
Location: Somewhere, having a beer

Re: decided to dust off

Wed Dec 13, 2017 7:14 pm

I see the picture. And yeah, it looks like the board has been subjected to some pretty serious heat.
Nostalgia isn't what it used to be.
 
Convert
Grand Gerbil Poohbah
Posts: 3428
Joined: Fri Nov 14, 2003 6:47 am

Re: decided to dust off

Wed Dec 13, 2017 7:26 pm

I see the picture, but all I see is either some dust or minor defects in the conformal coating (or whatever that coating is on PCBs, pretty sure it's not actually conformal coating, maybe a varnish).

If anyone had to deal with the Intel SDS2 server motherboards, they produced enough heat to discolor the PCB and desolder surrounding components but make no noticeable impact on the coating. While the board is naturally brown, I still don't see any discoloration or darkening, nor do I see anything wrong with the surrounding solder points or components.
Tachyonic Karma: Future decisions traveling backwards in time to smite you now.
 
just brew it!
Gold subscriber
Administrator
Posts: 51655
Joined: Tue Aug 20, 2002 10:51 pm
Location: Somewhere, having a beer

Re: decided to dust off

Wed Dec 13, 2017 7:35 pm

Looks like the coating is slightly blistered to me? A clearer pic would help.
Nostalgia isn't what it used to be.
 
Convert
Grand Gerbil Poohbah
Posts: 3428
Joined: Fri Nov 14, 2003 6:47 am

Re: decided to dust off

Wed Dec 13, 2017 7:47 pm

just brew it! wrote:
Looks like the coating is slightly blistered to me? A clearer pic would help.

In my experience it doesn't blister like that, and definitely not without some kind of discoloration or desoldering.

Check out this studio speaker I repaired for a friend: viewtopic.php?f=1&t=116387&p=1317504&hilit=speaker#p1317504

The PCB was charred, entire layers were gone. Even so, the surrounding PCB didn't "bubble" like this. I'm really standing behind this being nothing more than a coating visual defect.
Tachyonic Karma: Future decisions traveling backwards in time to smite you now.
 
just brew it!
Gold subscriber
Administrator
Posts: 51655
Joined: Tue Aug 20, 2002 10:51 pm
Location: Somewhere, having a beer

Re: decided to dust off

Wed Dec 13, 2017 7:57 pm

Yeah, those are good points.
Nostalgia isn't what it used to be.
 
ludi
Lord High Gerbil
Posts: 8073
Joined: Fri Jun 21, 2002 10:47 pm
Location: Sunny Colorado front range

Re: decided to dust off

Wed Dec 13, 2017 11:16 pm

Absent a clearer picture, it does look like some slight blistering and discoloration has occurred from either heat or subsurface corrosion.

Speaking to other comments: Not all PCBs fail in the same way, it depends on the quality of the board, the type of substrate, number of layers, environmental conditions, and so forth.
Abacus Model 2.5 | Quad-Row FX with 256 Cherry Red Slider Beads | Applewood Frame | Water Cooling by Brita Filtration
 
SoM
Gerbil Elite
Topic Author
Posts: 556
Joined: Wed Jan 26, 2011 11:56 am
Location: Toronto

Re: decided to dust off

Thu Dec 14, 2017 3:59 pm

just brew it! wrote:
Looks like the coating is slightly blistered to me? A clearer pic would help.


it's a caramelized look, like taking a blow torch to sugar. so looks like a small heat issue. i've seen worse

Win 10
InWin 303
Asus z170a
i7-6700k - H60
G.Skill 2x16GB 2400
M.2 950 Pro 256GB
EVGA GTX 1070 FTW
EVGA Supernova G2 750w
Acer XG270HU
HD 280pro
 
SoM
Gerbil Elite
Topic Author
Posts: 556
Joined: Wed Jan 26, 2011 11:56 am
Location: Toronto

Re: decided to dust off

Thu Dec 14, 2017 4:08 pm

here's a clearer pic of one of the areas

Image

Win 10
InWin 303
Asus z170a
i7-6700k - H60
G.Skill 2x16GB 2400
M.2 950 Pro 256GB
EVGA GTX 1070 FTW
EVGA Supernova G2 750w
Acer XG270HU
HD 280pro
 
Chuckaluphagus
Silver subscriber
Gerbil Elite
Posts: 828
Joined: Fri Aug 25, 2006 4:29 pm
Location: Boston area, MA

Re: decided to dust off

Thu Dec 14, 2017 10:52 pm

That is a lot clearer. That looks awful.
 
just brew it!
Gold subscriber
Administrator
Posts: 51655
Joined: Tue Aug 20, 2002 10:51 pm
Location: Somewhere, having a beer

Re: decided to dust off

Fri Dec 15, 2017 12:13 am

Yeah, there's definitely some discoloration which was not apparent in the original pic. I've seen worse, but only on boards which have ceased to function.
Nostalgia isn't what it used to be.
 
SoM
Gerbil Elite
Topic Author
Posts: 556
Joined: Wed Jan 26, 2011 11:56 am
Location: Toronto

Re: decided to dust off

Fri Dec 15, 2017 11:34 pm

just brew it! wrote:
Yeah, there's definitely some discoloration which was not apparent in the original pic. I've seen worse, but only on boards which have ceased to function.


not too worried yet, heck i ran my 486dx someting something with 14 mostly popped blown caps for almost 3 years before it bit the dust, or the 14" crt that i had the cover off and had a fan blowing, thats back in 96ish

we have newer better technology, i can rebuild :D

ps santa, i've been a good lad, left the cheese right where you like it

Win 10
InWin 303
Asus z170a
i7-6700k - H60
G.Skill 2x16GB 2400
M.2 950 Pro 256GB
EVGA GTX 1070 FTW
EVGA Supernova G2 750w
Acer XG270HU
HD 280pro

Who is online

Users browsing this forum: No registered users and 1 guest