Electronics Forum | Tue Feb 22 10:17:11 EST 2011 | huei23
Hi everyone, Our FA team recieved the defect unit from our customer, and the issue is GF discoloration. EDX was conducted and Na element was detected on the discolored area. We're currently working with the customer to determine the rootcause. Pleas
Electronics Forum | Thu Feb 26 21:35:21 EST 2015 | flyingsnow
Hi, has anyone experienced discoloration of cured non-conductive epoxy? It turned from white to deep red. The parts were returned from customer and we noticed the color change and wondered what could cause epoxy discoloration.Thank you!
Electronics Forum | Wed Aug 17 14:30:58 EDT 2005 | russ
I usually see this with mask that is not fully cured from the PCB shop. This probably agrees with the baking statement that you made.
Electronics Forum | Wed Jun 23 17:56:31 EDT 2004 | Shean Dalton
Acetone is likely not compatible with several component types, the evaporation charactoristics are desirable. IPA is more compatible, though, may not solubilize the residues. Austin American Technology developed MegaSolv JB and MegaSolv NOC for the
Electronics Forum | Mon Aug 21 15:02:53 EDT 2006 | FredC
If you really have Loctite Super Glue it is a cyanoacrylate and can be removed with acetone. If you have a Loctite aneorbic glue that has not hardened yet, acetone will remove it. If an anerobic has hardened I know of nothing that will remove it. Als
Electronics Forum | Mon Nov 21 20:21:04 EST 2022 | emeto
You can try strip it with Chemically (like Acetone) or micro-blasting.
Electronics Forum | Fri Apr 16 11:51:26 EDT 2010 | shawnvike
Looks like a simple variance in the solder mask discoloring. Shawn
Electronics Forum | Thu Apr 15 14:09:48 EDT 2010 | richardli
We found stains on the boards come out of reflow oven. The board itself color changed to yellowish from white . We understand discolor soldermask due to high temperature. This can be acceptable by our customer not the stains. The stains look like wa
Electronics Forum | Thu May 14 22:45:46 EDT 2009 | davef
You're correct. It's a peculiar looking defect. With measling, we expect to see discrete white spots or crosses just below the surface of the base material. We don't see that here. We do see a similar condition at almost every PTH in the picture, a
Electronics Forum | Mon Jul 11 10:04:51 EDT 2005 | russ
Try Acetone.
