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gigi56

TV - SONIC

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Buna ziua , Am in lucru acest TV -SONIC cu diagonala 34 cm Model ;STV-1467-TXT,sasiu 11AK36A8, si are urmatoarle circuite :- procesor: ST 92195C7B1/OER- jugla :STV 2248H- memorea:24C08W6- sursa :UC 3842Acest TV este defect la sursa ledul rosu nu se aprinde ,am verificat urmatoarele:rezistentile ,diodele condesatoarele sunt in regula, Q 801 inlocuit; am inlocuit si IC 841, si tot nu se aprinde ledul rosu, pe C833 sunt 300v, am demontat si verificat TR801 pare nu a avea spire intrerupte. Secundarul sursesi nu scoate nici o tensiuni e mort, apoi am facut o proba am dat afara Q801 si pe IC 841 si am montat si o sursa UPS, firul negru montat la masa si rosu in D de la Q801 si ledul rosu tot nu se aprinde, am demontat si IC500 ,dar nu stiu daca la acest TV cu memoria scoasa daca se aprinde ledul rosu ?Pot sa va spun ca nu am intilnit un asemenea defect ,si va rog pe dvs cu mai multa experenta la aceste TV-uri sa ma ajutati sa rezolv acest defect la sursa .Va multumesc de intelegere .

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Nu ai ceva scurt in secundar?Masoara tensiunile de iesire din sursa si lasa ledul pana ai tensiuni acolo.De mers merge sasiul asta cu UPS001 dar nu merita modificat.Start ai pe Ciul de alimentare sursa?

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