attilaa0 Posted November 23, 2015 Share Posted November 23, 2015 Buna ziua!Acest tv cu TDA9551H/n3/3 si cu BV AN15524 face urmatorul fenomen:Cuplez ,se aprinde ledul apoi pornesc ,apare sonorul si niste linii colorate ca si inainte de a porni B.V,apoi in secunda urmatoare sare in st-by .Si degeaba mai vreau sa pornesc nu mai porneste doar daca decuplez de la retea. Am masurat tensiunile,par ok.Am scos afara circuitul B.V.,am pus alt dump ,la fel face.Asteapta un feed back?? Astept pareri ,ce poate fi?Va multumesc! Link to comment
iuliantv Posted November 23, 2015 Share Posted November 23, 2015 o cura de condesatori,precum si inlocuirea ic baleaj vertical si dioda bv condesatori bv, 11ak56 Link to comment
giany Posted November 23, 2015 Share Posted November 23, 2015 masoara tensiunile recuperate de 5v si 8v pe cei 2 tranzistori stabilizatori serie de multe ori la acest sasiu pica dioda stabilizatoare din baza celui de 5v si creste spre 8v Link to comment
attilaa0 Posted November 23, 2015 Author Share Posted November 23, 2015 (edited) Defect gasit 100uF din b.v devalorizat.Si inca o chestie acest sasiu 11ak56 nu merge cu circuitul BV scos afara.Tv intra inapoi in st by. Va multumesc! Edited November 23, 2015 by attilaa0 Link to comment
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