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iuliantv

sunny chassis m28 schema

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a-s avea nevoie de schema sursei chassis m28,pe tranzistori fara optocuplor,ce a-m gasit pe net e cu circuit integrat,m-ar interesa in general dioda zener d809,pare a fi de 9v1 ,asa ca a-m montat 2buc 4v7 nu a-m momentan altceva,dar sursa porneste dar u1 este peste 180v,a-m schimbat tranzistorii,3buc defecte,rezistenta de balast ,condesatori,urmeaza sa schimb si semireglabilul de 1k care pare ok,dar m-a intereseaza valoarea diodei zener d809(nu a-m montat nimic invers )v-a multumesc

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a-s avea nevoie de schema sursei chassis m28,pe tranzistori fara optocuplor,ce a-m gasit pe net e cu circuit integrat,m-ar interesa in general dioda zener d809,pare a fi de 9v1 ,asa ca a-m montat 2buc 4v7 nu a-m momentan altceva,dar sursa porneste dar u1 este peste 180v,a-m schimbat tranzistorii,3buc defecte,rezistenta de balast ,condesatori,urmeaza sa schimb si semireglabilul de 1k care pare ok,dar m-a intereseaza valoarea diodei zener d809(nu a-m montat nimic invers )v-a multumesc

da se pare ca nu dioda e problema ,a-m gasit un chassis identic ca sursa,a-m pus dioda zener de pe el,si acelasi rezultat,a-m un martor acum,dar nu strica totusi schema daca o poate da cineva,v-a multumesc,d813 1n4148 strapunsa,sursa rezolvata,inca o data v-a multumesc

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D 809 este 9V1 . Am schema cu tranzistori dar nu o pot atasa ,este prea mare .Da-mi adresa de email si ti-o trimit repede

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Asta este o varianta cu tranzistori :

d813 in4148 intrerupta,,i-mi scapase din cauza prafului,noroc de notatia reprezentativa de pe spatele placii,altfel daca nu dadeam tot praful jos, m-a m-ai chinuiam ceva timp,sursa rezolvata,v-a multumesc de schema si tuturor de ajutor

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