emy_dx Posted December 9, 2009 Share Posted December 9, 2009 Va salut.Problema este ca finalul din sursa se incinge cam tare.Finalul a fost schimbat acum 2 ani cu un BUZ90AF si nu au fost probleme.Acum am pus acelasi tranzistor,doar ca MC44608P40 am gasit cu P75 in loc de P40.Tranz. nu pare facatura.Pe sursa artificiala se incinge la fel in interval de 2 min.Tensiunile din secundar sunt in regula.Posibil sa fie de la I.C.800 care lucreaza la 75Khz? Link to comment Share on other sites More sharing options...
harman37arun Posted December 9, 2009 Share Posted December 9, 2009 verificati cu un frecventmetru frecventa sursei eventual oscilografiati sursa posibil sa fie un cond fix cu probleme. Link to comment Share on other sites More sharing options...
Vas Posted December 10, 2009 Share Posted December 10, 2009 Pune un STP. in loc de BUZ.Nu demult am patit cu BUZ,dupa cateva secunde frigea.Am pus un STP6NK60,care este numai caldut. Link to comment Share on other sites More sharing options...
JAD Posted December 10, 2009 Share Posted December 10, 2009 Si pune MC44608P40. Sursa nu merge la 75KHz ci la 40KHz. Daca pui alte piese normal ca nu merge bine. BUZ90A(F) se foloseste impreuna cu TDA4605 si n-a fost niciodata montat din fabrica pe 11AK30. Link to comment Share on other sites More sharing options...
emy_dx Posted December 11, 2009 Author Share Posted December 11, 2009 Si pune MC44608P40. Sursa nu merge la 75KHz ci la 40KHz. Daca pui alte piese normal ca nu merge bine. BUZ90A(F) se foloseste impreuna cu TDA4605 si n-a fost niciodata montat din fabrica pe 11AK30.Domnule JAD ati avut dreptate cu I.C.-ul.Dar nu gasisem cu P40.Acum l-am schimbat cu ce trebuie(P40)si tv-ul funct.perfect.Ce n'am inteles eu,este ca are un zgomot in zona placutei de la tubul cinescopic.Nu este suparator,dar daca asculti atent cu tv-ul pe mute se aude acel zgomot.Care o fi hiba?Va multumesc pentru raspunsuri. Link to comment Share on other sites More sharing options...
palcu ion Posted December 11, 2009 Share Posted December 11, 2009 e zgomotul normal de 50 hz de la deflexia verticala Link to comment Share on other sites More sharing options...
emy_dx Posted December 11, 2009 Author Share Posted December 11, 2009 e zgomotul normal de 50 hz de la deflexia verticalaDeci asta era.Va multumesc tuturor inca odata.Stima. Link to comment Share on other sites More sharing options...
Guest cmi2008 Posted December 15, 2009 Share Posted December 15, 2009 nu este beko Link to comment Share on other sites More sharing options...
JAD Posted December 15, 2009 Share Posted December 15, 2009 Da. E Vestel. Oricum 11AK30 il identifica fara dubiu. Link to comment Share on other sites More sharing options...
lus Posted January 20, 2010 Share Posted January 20, 2010 am aceeasi problema,se pare ca nu functioneaza mc44608p75 in loc de p40,desi alti mesteri asa mi-au recomandat.sursa functioneaza dar apar oscilatii pe ecran si se infierbanta 6n60-ul Link to comment Share on other sites More sharing options...
adi sony Posted January 20, 2010 Share Posted January 20, 2010 Daca ai schimba chooperul ,am avut un AK30 ,exact acest defect l-am avut si eu ,se in cingea tranzistorul sursei ,multumesc userului ,,sorinpavel,, ptr ajutor. Link to comment Share on other sites More sharing options...
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