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tv saba model T 7060sh


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tv e mut,nu are stby,ledul e stins am verificat cordonul alimentare siguranta ok, rezistentele de wataj ok,alimentez de la retea si nu se aude nimic,nu am studiat mai indetaliat asa ca am sa mai revin, defect misterios  :scarpin

asta e schema, multumesc Florin Iordache

Edited by vl78stc
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salutare,revin cu acest tv in sensul ca am verificat rezistentele ce vin in pin 2 si 3 sunt bune am verificat lipituri si masurat tensiuni pe tda 4605 in pin 1 nu am nimic, in 2 si 3 am 0,7v si nu am tensiune nici in pin 8,am schimbat si condensatorii din sursa,am verificat si cei doi tranzistori si sunt buni,dupa ce am facut toate acestea am schimbat si tda si tz din sursa si tot la fel face,am tensiune pe cond.150uf/400v- 312v, iar mai departe in secundar nu am nimic pe filtraj, si ce sa mai pun bec daca nu am nimic,va informez ca am 162v inainte de rezistente si 51v inainte de rp12 care este de 180k,am si schimbat aceasta rezistenta si tot asa face-vine in pin 2 tda,

deci nu am rezolvat nimic tv nu are stby cum am mai spus si nu se aude cind alimentez ca ar lua sarcina,parca ar fi intrerupt ceva si ma duce gindul la trafo,

un ajutor din partea dumneavoastra ar fi bine venit,

multumesc

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am verificat rezistentele,am schimbat diodele dp23  si dp24 schimbat si tz bc337si nimic nu am tensiune in pin6,am masurat infasurarea  trafo in 7 si 6 fata de masa si nu am tensiune alternativa,in 2 si 3 am 160v, in 12 fata de 14 am 5.6v ca ,in pin 2-3 tda 4605 am 0,7v iar in rest nimic la nici un pin fata de 4,am verificat fiecare componenta de la pin 6 pina la trafo in 6-7 si sunt bune,am scos un capat lui rp14 si rp12 ce intra in pin 2-3 si am tensiune,as dori un sfat daca se poate 

multumesc

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