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Mainboard Ca.paci-tor 05-12-2016

 
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MessagePosté le: Jeu 12 Mai - 06:45 (2016)    Sujet du message: Mainboard Ca.paci-tor 05-12-2016 Répondre en citant

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,If,you,are,doing,a,lot,of,cap,replacement,you,may,find,it,useful,to,buy,a,desoldering,iron,from,one,of,the,major,manufacturersWiberg,,,,EThis,,oxide,,serves,,as,,dielectric,,and,,also,,protects,,the,,capacitor,,from,,the,,aggressive,,reactions,,of,,metallic,,aluminum,,to,,parts,,of,,the,,electrolyte,,1Many,other,equipment,manufacturers,unknowingly,assembled,and,sold,boards,with,faulty,capacitorsIf,,the,,hole,,is,,not,,then,,clear,,after,,that,,it,,is,,best,,to,,proceed,,to,,using,,the,,dental,,pick,,or,,needle,,techniqueBut,,even,,these,,glycol,,electrolytes,,had,,an,,unwanted,,chemical,,water-crystal,,reaction,,,according,,to,,the,,scheme:,,"acid,,+,,alcohol",,,,"ester,,+,,water"Example:,,V8,,=,,August,,2007You,,should,,only,,need,,a,,drop,,of,,solder,,to,,secure,,the,,leg,,at,,each,,junction,,pointAluinfo.de,,,The,,,more,,,times,,,you,,,do,,,this,,,you,,,increase,,,the,,,danger,,,of,,,damaging,,,the,,,vias,,,on,,,the,,,boardVoila:,A,nice,row,of,non-bulging,capacitors,,ready,for,another,5,years,of,abuseThis,,,makes,,,it,,,so,,,much,,,easier,,,and,,,then,,,you,,,dont,,,have,,,to,,,go,,,hunting,,,for,,,the,,,manual,,,of,,,someones,,,obscure,,,board,,,on,,,the,,,internet,,,when,,,you,,,hooked,,,it,,,up,,,wrong,,,laterNon-solid,,,aluminum,,,electrolytic,,,capacitors[edit]Some,,,like,,,to,,,heat,,,the,,,board,,,with,,,a,,,hot,,,air,,,heat,,,gun,,,or,,,work,,,with,,,hot,,,air,,,pencilFurthermore,,by,improving,the,conductivity,of,the,electrolyte,,capacitors,not,only,can,withstand,a,higher,ripple,current,rating,,they,are,much,cheaper,to,produce,since,water,is,very,low,in,cost,compared,to,other,solventsIf,,you,,reached,,this,,page,,by,,clicking,,a,,link,,,contact,,the,,Web,,site,,administrator,,to,,alert,,them,,that,,the,,link,,is,,incorrectly,,formattedpull,,the,,legs,,of,,the,,capacitor,,to,,check,,that,,it,,is,,tight,,against,,the,,board,,and,,bend,,the,,legs,,of,,the,,cap,,slightly,,outwardsFeger,,,T.FCloseup,,of,,a,,broken,,electrolytic,,capacitor,,vent,,and,,dried,,electrolyte,,residue,,it,is,fine,thoughClean,off,any,protuding,bits,of,solder,,and,youre,doneThe,,non-solid,,aluminum,,electrolytic,,capacitors,,with,,improperly,,formulated,,electrolyte,,mostly,,belonged,,to,,the,,so-called,,"low,,ESR",,,"low,,impedance",,,or,,"high,,ripple,,current",,e-cap,,seriesIf,the,machine,doesnt,work,at,all,right,now,,you,dont,have,a,lot,to,lose^,a,b,"AIdeally,,with,,the,,front,,of,,the,,board,,facing,,you,,while,,you,,heat,,from,,the,,rearJose,Delgado,wrote:,January,27,,2015,at,19:52,Thanks,so,much,for,this,,,When,,,you,,,are,,,soldering,,,you,,,MUST,,,wear,,,safety,,,glasses,,,or,,,your,,,normal,,,prescription,,,glassesUnimpeded,,,formation,,,of,,,hydroxide,,,(hydration),,,and,,,associated,,,hydrogen,,,gas,,,production,,,,occurring,,,during,,,"capacitor,,,plague",,,or,,,"bad,,,capacitors",,,incidents,,,involving,,,the,,,failure,,,of,,,large,,,numbers,,,of,,,aluminum,,,electrolytic,,,capacitors,,,,has,,,been,,,demonstrated,,,by,,,two,,,researchers,,,at,,,the,,,University,,,of,,,Maryland,,,who,,,analyzed,,,the,,,failed,,,capacitors.[34]2,,,Al,,,(s),,,+,,,2,,,NaOH,,,(aq),,,+,,,6,,,H2O,,,,,,2,,,Na+,,,(aq),,,+,,,2[Al(OH)4],,,(s),,,+,,,3,,,H2,,,(g),,, d6d2cc075d
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