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Petronel Marin

tv samsung porneste 2 secunde si se opreste

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Am un TV samsung cu procesor TDA 9351PS/N2/3I1308 . Porneste 2 secunde si se opreste . Sursa lucreaza in continuare , in schimb nu mai lucreaza sincro . Va rog sa-mi dati un sfat de la un specialist .

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Ce verificari ai facut la el .Masoara(  schimba) conzi din sursa .Intrerupe colector final linii,pui un bec Intre colector si masa masori tensiunea ...samd.

Edited by ionel1959

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Din sursa avem o tensiune de start care ajunge in driver . Dupa 2 secunde de functionare tensiunea din colector prefinal scade nefiind comandat din TDA9351PS/N2/3I1308 . Sursa tine aprins bec de 75W cand intrerup colector TZ final linie . Am schimbat si cadrele si trafolinie . Poate sa mai fie def si altceva in afara de jungla ? Multumesc anticipat pentru ajutor .

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Scoate putin tz.din driver si masori frecventa in baza lui vezi daca se mentine.Eu asa fac ca n-am osciloscop.

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In cele 2 secunde de functionare se aude un tiuit in trafolinie , cred ca frecventa este alta . In baza prefinal linie frecventa nu se mentine , de aceea cred ca se blocheaza driverul pe care l-am si inlocuit . Ce sa-i mai fac ? Mentionez ca nu am aparat de masura al frecventei , nici osciloscop . Repar tv de ceva ani , am o minima experienta dar defectul acesta ma depaseste .

Modelul este CZ-21M063N .

Finalul linie este D2499 .

Am schimbat si cuartul de langa procesor .

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schimba conzi fara sai masori CR409S CR410S CR404S si CR405S de pe linga D2499 scoatei si inlocuiestei fara sai mai masori si va merge

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Poate fi din dump,BV,traf linii deci trebuie testat si masurat.Greu fara aparatura.

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Cine nu are osciloscop,pune degetu' cu saliva.Vai de ea meserie......

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Mii de multumiri domnului Harhas Florin din Iasi pentru ajutor . In viitor va rog sa-mi mai dati cate un sfat util . Sanatate va doresc !

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daca cineva orbeste reuseste sa-ti repare tv aflat in fata ta!!!!!!!!!!!!!!......eu m-as lasa!!!!!!!m-as duce la o!!!!!!!i!esti varza!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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