Electronics Forum | Wed Jun 08 13:06:36 EDT 2005 | jimby
You will have to machine the part off down to the top of the balls. Wick solder off from individual sites one at a time. All that will be left is Parylene shell where balls once were. Take an orangestick and alcohol to break up and remove. Tricky par
Electronics Forum | Mon Nov 08 12:47:52 EST 2004 | clampron
Good Day Everyone, I have a BGA rework that has some chipped/damaged solder mask that will need to be repaired prior to BGA replacement. I was wondering what materials are being used in the industry for this type of application. Any help would be g
Electronics Forum | Mon Nov 08 13:38:37 EST 2004 | davef
You need to cover the chipped areas with a protectant coating, like epoxy. Look here:http://www.circuittechctr.com/products/115-1322.shtml We have no relationship, nor receive benefit from the company referenced above.
Electronics Forum | Mon Nov 08 18:05:18 EST 2004 | russ
Looks like we have been running the cure a little short (but only by about 44 min). I need to check if elevated temp shortens cure time to 1 min. at 700F! Thanks Dave, much appreciated Russ
Electronics Forum | Mon Nov 08 15:10:52 EST 2004 | russ
We usually get some mask material from our board house. It cures with heat so it works really well in our applications. Be wary of the "overcoat pens" they don't seem to hold up under heat and thre solder will flow right underneath it during BGA a
Electronics Forum | Tue Nov 09 10:44:13 EST 2004 | russ
I guess i might want to throw this in for future reference. After speaking with our board supplier he states that this mask is fully cured when it reaches approximately 180C. I beleive this since we usually probe the repaired area after putting the
Electronics Forum | Mon Nov 08 17:47:58 EST 2004 | davef
Russ: On "usually get some mask material from our board house. It cures with heat so it works really well in our applications.": We're unsure about the type of mask that you are using, but be careful [we used to do this, also]: * Final cure of the L
Electronics Forum | Fri Oct 26 08:29:03 EDT 2007 | pjc
Try this guy, maybe he can hook you up: http://www.dekhead.com/index.html
Electronics Forum | Thu Jul 17 08:36:21 EDT 2008 | steveliu
How did you convert the touch screen to the monitor and mouse combination? We had the same problem two years ago and tried to do the conversion, but ended up with a new DC/DC power supply card.
Electronics Forum | Mon Sep 21 18:19:41 EDT 2009 | jlawson
Has it stopped all togather, or look like power problem. I fixed one of these things , was power issue , cold joint on Switchmode Supply to the touch screen controller and up she went again. This only if power to the PCB is faulty....
.gif)
