jonnyGURU Forums
Home Site Search Reviews Articles Contest Links PSU FAQs  


Go Back   jonnyGURU Forums > General Electronics > Electronic Theory and Principle

Electronic Theory and Principle Discussion of electrical theory, law, etc.

Reply
 
Thread Tools Display Modes
  #1  
Old 10-17-2006
jonnyGURU's Avatar
jonnyGURU jonnyGURU is offline
Site Founder
 
Join Date: Oct 2006
Location: jonnyGURU forums, of course!
Posts: 10,531
Thanks: 131
Thanked 172 Times in 116 Posts
Default Will a component explosion always create a burn?

Let's say I turned a PSU on and there was a pop and a bright white flash of light.

Shouldn't I be able to see a "burn mark" coming from the source of the light if I were to open the unit up for investigation?

Let's just say "I'm curious."
__________________
We are stuck with technology when what we really want is just stuff that works. -- Douglas Adams
Reply With Quote
  #2  
Old 10-17-2006
GalvanizedYankee's Avatar
GalvanizedYankee GalvanizedYankee is offline
Old knuckel bustin' wrench twister
 
Join Date: Oct 2006
Location: SoCal Moderator
Posts: 1,051
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Pop+light=an arc of current. In an inert atmospher there would be no blackened burn mark, just a tiny creater from the transfer of conductant. Kind of like deplating.
So yes, with careful inspection something should show. I'm old and would need good light/magnification. Use great care not to wipe away any burn mark. It the Trio acting up already.
Reply With Quote
  #3  
Old 10-17-2006
Oklahoma Wolf's Avatar
Oklahoma Wolf Oklahoma Wolf is offline
Moderator of Silly Walks
 
Join Date: Oct 2006
Location: Moderator
Posts: 5,604
Thanks: 35
Thanked 103 Times in 67 Posts
Default

Most of the time there should be a mark. Might be a little hard to see at times though.
Reply With Quote
  #4  
Old 10-17-2006
madmat's Avatar
madmat madmat is offline
Just kidding, not banned
 
Join Date: Oct 2006
Location: In yer 'fridge, eatin' yer pizza
Posts: 1,785
Thanks: 0
Thanked 1 Time in 1 Post
Default

If a cap were to blow there'd also be fluff from the electrolytic material. I've blown several caps in my car stereo For a transistor it's easy, just look for the transistor with the body blown open and possibly a leg sticking up at right angles to the other two. Yes, I've blown a few of them up too.
__________________
Sign Me!

Last edited by madmat; 10-17-2006 at 07:48 PM.
Reply With Quote
  #5  
Old 10-17-2006
jonnyGURU's Avatar
jonnyGURU jonnyGURU is offline
Site Founder
 
Join Date: Oct 2006
Location: jonnyGURU forums, of course!
Posts: 10,531
Thanks: 131
Thanked 172 Times in 116 Posts
Default

Not a cap. It was a sharp pop. Like when a transformer blows.

But I can't see any damage.
__________________
We are stuck with technology when what we really want is just stuff that works. -- Douglas Adams
Reply With Quote
  #6  
Old 10-17-2006
Oklahoma Wolf's Avatar
Oklahoma Wolf Oklahoma Wolf is offline
Moderator of Silly Walks
 
Join Date: Oct 2006
Location: Moderator
Posts: 5,604
Thanks: 35
Thanked 103 Times in 67 Posts
Default

I would look carefully at anything attached to a heatsink... chances are, you'll find the culprit there somewhere.
Reply With Quote
  #7  
Old 10-17-2006
jonnyGURU's Avatar
jonnyGURU jonnyGURU is offline
Site Founder
 
Join Date: Oct 2006
Location: jonnyGURU forums, of course!
Posts: 10,531
Thanks: 131
Thanked 172 Times in 116 Posts
Default

Everything attached to the sinks seem to be in tact... oh wait.. "theoretically."
__________________
We are stuck with technology when what we really want is just stuff that works. -- Douglas Adams
Reply With Quote
  #8  
Old 10-17-2006
Bbq's Avatar
Bbq Bbq is offline
Custom User Title
 
Join Date: Oct 2006
Location: Vancouver, Canada
Posts: 678
Thanks: 0
Thanked 0 Times in 0 Posts
Default

It all depends. If you have a large POP and a flash of light, it could be a lot of things. Depending on whati t aws, it could be a small short, a fuse, transformer, etc.

When I had a maxtor 200gb give up the magic blue smoke, it went POP, and let off the smoke. Aside from the slight pock marks on the IC and a bit of melted plastic, there was no burned material, no burned pcb, and only a lot of heat was created. Enough to discolor the casing of my Seagate.

I'd try looking all around the transformer. It might be the PCB side which is why you cant see any damage.
Then maxtor replaced the drive with a 300gb.
Reply With Quote
  #9  
Old 10-17-2006
Super Nade's Avatar
Super Nade Super Nade is offline
Moderator
 
Join Date: Oct 2006
Posts: 1,331
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by Bbq View Post
It all depends. If you have a large POP and a flash of light, it could be a lot of things. Depending on whati t aws, it could be a small short, a fuse, transformer, etc.
A fuse does burn out brightly. Blew a measely 2A one today.
Reply With Quote
  #10  
Old 10-23-2006
Rubycon Rubycon is offline
500W User
 
Join Date: Oct 2006
Posts: 68
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Turn it on again. lol

I've heard pops from flashovers but you should never have a flashover in a PC power supply!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
will it boot or burn? flclisgreat PC Power Supply Discussion 3 04-30-2008 07:06 PM
PSU rails and component maduser PC Power Supply Discussion 15 03-23-2008 02:28 AM
Psu Burn Smell anqua99 PC Power Supply Discussion 2 02-04-2008 10:32 AM
What 's your fave pc component? ianm2 General Hardware 21 03-08-2007 05:39 PM
Component Recommendations Killamatt General Hardware 12 02-26-2007 07:44 PM


All times are GMT -4. The time now is 09:35 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.