Thread 107164667

is it bad to have this shit on your board? specifically a brand new one
the picture is from stack exchange but there isn't much information there
https://electronics.stackexchange.com/questions/621717/what-are-these-white-grey-stains-on-the-back-of-a-motherboard

>>107164667 (OP)
The lines seem to be surrounding all areas with exposed PTH leads sticking out, to the exclusion of areas with only SMD parts.

I think they mark the openings of something called a "selective wave soldering pallet" that is used to protect previously assembled SMD parts during wave soldering of the PTH parts. I'm not sure how the stains are formed. I can see some references to flux residue being trapped under the side walls of the pallet mask.

>>107164667 (OP)
don't worry you bought the warranty
you bought it right?

>>107165332
it's gonna run out and I have no idea if this will shit itself or not in the next few years. Probably low chance I guess.

>>107164667 (OP)
i still have a fully functional motherboard on one of my pcs that has rust and stains from a spilled water and humidity. works just fine. if there's worries, then just use isopropyl alcohol to clean all this shit out.

>>107164667 (OP)
it's just aura, unc