Lo lus no hais txog kev vuam cov hniav nyiaj hniav kub, ib qho txheej txheem tseem ceeb hauv kev tsim khoom, kho, thiab kho kom zoo nkauj. Nws cuam tshuam nrog kev cua sov cov hlau (lossis solder) mus rau lawv qhov chaw yaj kom koom nrog cov khoom siv hniav nyiaj hniav kub - xws li cov pob zeb diamond teeb tsa prongs, cov saw hlau, thiab cov pob qij txha ntawm lub cev tseem ceeb ntawm cov hniav nyiaj hniav kub. Yuav kom ntseeg tau tias qhov vuam muaj zog, zoo nkauj, thiab tsis ua rau cov hniav nyiaj hniav kub puas tsuaj (tshwj xeeb tshaj yog cov pob zeb diamond), cov txheej txheem vuam tsim nyog yuav tsum tau xaiv raws li cov khoom siv hniav nyiaj hniav kub, cov qauv, thiab cov kev cai.