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Pro tip: Don't buy cheap soldering flux from a dollar store
I grabbed a $1.50 flux tube from a discount bin last month to fix a bad joint on an old stereo receiver. The thing smoked up my whole garage and left a crusty white mess that wouldn't clean off with alcohol. Has anyone else had flux ruin a board like that or am I just unlucky?
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wyatta304mo ago
Wait, was the flux labeled "rosin" or "no-clean"?
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eric_johnson4mo ago
Wait, did you try isopropyl alcohol or just regular rubbing alcohol? Rubbing alcohol has water and other junk in it that won't dissolve flux residue properly. You gotta use 91% or higher isopropyl for it to actually work on that crusty rosin mess.
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