Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Lifted pad on double sided PCB
New Posts  All Forums:Forum Nav:

Lifted pad on double sided PCB

post #1 of 8
9/1/11 at 12:03pm
Thread Starter 

I heated a small hole for a capacitor and lifted up the little metallic ring on the top of the PCB. The ring on the underside is totally in tact and connected to the trace. Did I screw anything up or am I fine? Thanks all.

 

EDIT: OK so it's a double sided PCB. There doesnt appear to be a trace running to this particular hole on the topside- though I gather there still could be a connection there? I'll do a bit of testing with the multimeter and come back.


Edited by LingLing1337 - 9/1/11 at 1:01pm
Reply
post #2 of 8
9/1/11 at 12:52pm

Sounds like a battle wound, should be fine if you still have trace on the underside in tact.

Reply
post #3 of 8
9/1/11 at 1:06pm

I would say you are fine. I believe rings on the same side as your components are there so you can solder for more stability for components that have to endure physical stress. Like if you have a 1/4 headphone jack that will be tugged back and fourth, it will be more important for that, than say a capacitor that does not move.

Reply
post #4 of 8
9/1/11 at 3:13pm
Thread Starter 

Whew! Thanks guys. I have a feeling I should have built a few more kits before cracking open my main amp. I lifted a pad on the amp PCB as well, which is a brown thru-hole PCB. For that I scraped away a bit of the trace and soldered onto the copper.

 

Everything checks out for continuity on the multimeter so I guess I'm good. I installed 4 Sonicaps in my Decco. Here are some pics

 

Amp board

 

[IMG]http://i.imgur.com/oXDBRl.jpg[/IMG]

 

DAC

 

[IMG]http://i.imgur.com/PI3eol.jpg[/IMG

[IMG]http://i.imgur.com/bD3ujl.jpg[/IMG]

[IMG]http://i.imgur.com/g42c7l.jpg[/IMG]

[IMG]http://i.imgur.com/XsEOjl.jpg[/IMG]

 

I guess my iron (hakko fx888) was a bit hot for this board at 750F? The large chisel tip didn't help either. BTW I did wipe that debris off the boards.

 

EDIT: ****, is that another lifted pad on the amp? I never heated anything for more than 3-4 seconds.


Edited by LingLing1337 - 9/1/11 at 3:15pm
Reply
post #5 of 8
9/1/11 at 4:09pm

I'm not sure about anyone else but I think 3-4 seconds of iron contact would be a bit too long. I normally just tap on the pad for 1 second max and the solder fills in just fine with flux.

Reply
post #6 of 8
9/1/11 at 5:13pm

I usually use about 550F on my Weller WES51.

I have never fried a trace even on a cheap Bravo/Indeed/Muse amp board.

Reply
post #7 of 8
9/2/11 at 5:56am

These dip sockets are a great idea for ic components...

 

http://www.google.com.au/imgres?q=8+PIN+DIP+SOCKET&hl=en&safe=off&client=safari&sa=X&rls=en&biw=1358&bih=1166&tbm=isch&prmd=ivns&tbnid=hsx2cn-fvRwzPM:&imgrefurl=http://fr.digikey.com/1/3/indexb200.html&docid=XaUopzsQtH_7bM&w=640&h=640&ei=StJgToqOAcagmQWFmdzVDQ&zoom=1&iact=hc&vpx=187&vpy=88&dur=54&hovh=225&hovw=225&tx=89&ty=144&page=1&tbnh=158&tbnw=158&start=0&ndsp=35&ved=1t:429,r:0,s:0

Reply
post #8 of 8
9/2/11 at 2:25pm
Thread Starter 

Thanks for the tip on the DIP sockets John... Those would be nice for messing about with the DACs.
 

Quote:
Originally Posted by Avro_Arrow View Post

I usually use about 550F on my Weller WES51.

I have never fried a trace even on a cheap Bravo/Indeed/Muse amp board.



I keep looking for the bowing smiley but I guess you'll have to settle for this cookie

 

images?q=tbn:ANd9GcQnAyBkZLIvGRvpQenHZCl7jrgLDgZu_CaB9PDXk4qoxv2jBYsf

 

Reply
New Posts  All Forums:Forum Nav:
  Return Home
Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Lifted pad on double sided PCB