mariantoader82 Posted October 12, 2014 Share Posted October 12, 2014 Va salut! Sasiu pc04a defect initial desincronizare pe verticala ,dupa ce am rememediat defectul a disparut sonorul ,etajul final audio functioneaza corect am verificat condensatorii din el cit si cei din preamplificator pe pin 4 tba120 sunt 5,3v si pin 5 3,5v . Pe pin 11am 12v ,imaginea este normala vol + si vol- se vede ca actioneaza ce ar putea fi defect? Link to comment
bobo Posted October 12, 2014 Share Posted October 12, 2014 Exista o modalitate de salvare a junglei.parca se lasa un pin in aer. O sa caut si revin. Link to comment
modoran Posted October 12, 2014 Share Posted October 12, 2014 (edited) Daca e defect TDA1940 la pin 7 si nu merge circuitul de muting, da. http://www.schemeelectronice.com/357/defect-tv-goldstar-ckt-2190/ Eu as relipi prima data toti pinii TDA 1940. Totusi nu cred ca se aplica in cazul de fata, calea de sunet nu e blocata (TBA120 are tensiune de reglaj) Edited October 12, 2014 by modoran Link to comment
mariantoader82 Posted October 12, 2014 Author Share Posted October 12, 2014 Am lasat la TDA1940 pin 7 muting in aer si am sonor, pe viitor trebuie schimbat TDA1940 sau jungla? Multumesc frumos de ajutor! Link to comment
dan cod Posted October 12, 2014 Share Posted October 12, 2014 Va merge așa daca nu supara lipsa mutingului. Link to comment
palcu ion Posted October 12, 2014 Share Posted October 12, 2014 o sa ai fisiit fara antena,alt inconvenient nu este Link to comment
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