grasi Posted January 9, 2016 Share Posted January 9, 2016 buna ziua va deranjez cu o intrebare am un tv zender model ft2105d am probleme cu sunetul ,nu am sunet am schimbat doua integrate de sunet nu merge alimentare pe pinul 1 este de 13 v integratul este AN17821A eu am pus AN7522N care este echivalent tot nu am sunet am incercat printr un amplificator (IN1) si (IN2) pin6 si pin 8 si merge se aude dar cand bag integratul nu merge rog ce ar mai putea sa fie .stima Link to comment
adydep Posted January 9, 2016 Share Posted January 9, 2016 La pin 5 sa fie 5V-sa iasa din standby- ,iar la pin 9 sa fie 1,3V volum maxim Link to comment
grasi Posted January 9, 2016 Author Share Posted January 9, 2016 pe pinul 9 am 1,3 1,4 v iar pe pinul 5 nu e numic Link to comment
Radiotelegrafist Posted January 9, 2016 Share Posted January 9, 2016 https://www.google.ro/search?hl=ro&site=imghp&tbm=isch&source=hp&biw=1016&bih=627&q=an17821a&oq=an17821&gs_l=img.1.0.0l2j0i30l3j0i24l5.9803.24146.0.30800.7.7.0.0.0.0.521.2557.2-1j1j3j1.6.0....0...1ac.1.64.img..1.6.2552.C5ZCztBx0-8#imgrc=Dx0QYvVTFq39gM%3A Asta este schema de aplicatie a integratului sunet Link to comment
adydep Posted January 9, 2016 Share Posted January 9, 2016 Intrerupeti pin 5 de restul montajului,si polarizati-l la 5 V printr-o rezistenta de 1Kohm.Si gata sonorul Link to comment
cornel1962 Posted January 9, 2016 Share Posted January 9, 2016 verificati circuitul de MUTE : Intrerupeti pin 5 de restul montajului,si polarizati-l la 5 V printr-o rezistenta de 1Kohm.Si gata sonorul Corect, asa este ! ..., dar trebuie refacut circuitul respectiv. Link to comment
grasi Posted January 9, 2016 Author Share Posted January 9, 2016 am rezolvat problema ,am anulat tranzistorul q702 (c1815) si a pornit sunetul si merge si mute va multumesc la toti Link to comment
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