Electronics Forum: discoloration silk (4)

Part of PCB silkscreen turns yellow brownish

Electronics Forum | Fri Aug 29 09:39:08 EDT 2014 | rgduval

I'll try to deal with the issues as you've presented them. 1. Blistering/delamination, shown in photo 2. The most likely cause of blistering/delamination like this is moisture in the boards. The moisture can get into the boards in multiple ways..

Re: Soldering long lead thru hole parts

Electronics Forum | Thu Dec 09 23:57:41 EST 1999 | Jeff Sanchez

Mike, A drag solder system is not so bad. If it's not discoloring the silk screen , damaging your parts or blistering your boards than it looks like a safe bet. I am not sure what other components you have on the boards besides the LED's? But the

Express Newsletter: discoloration silk (10)

SMT Express, Issue No. 3 - from SMTnet.com

SMT Express, Issue No. 3 - from SMTnet.com Volume 1, Issue No. 3 Wednesday, August 18, 1999 Featured Article Return to Front Page BGA REWORK Earl Moon Proof Of Design (POD) COMPARE PART SQUARENESS TO BOARD'S SILK-SCREEN OR TRACES A part


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