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Use more flux. Either your solder did not get properly everywhere hence the blob or you used way too much solder but for both cases flux will help. There is no need to use too little flux, just use a lot.
Of course you need to wash flux off afterwards. I like to submerge whole mobo to IPA and carefully brush everything off.
Ps. While blobs won't harm anything per se you still should fix them. Now you do not see if you have cold joints...
Last edited by jarp; 16 October 2016 at 17:18.
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