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I fry 2 Zimo and one Esu till now. Sent them back and fix it. Was 15-20$. My mistake, that its. MRC i fry one and one was dead from box, just put in garbage, not anyone normal want even to look. One...

If the board is multi-layer, you can not do it. Depend by complexity. Look under powefull light and see if have traces also inside, not only on both faces. If it have, you can not solder that.