mercenarx Posted December 20, 2013 Share Posted December 20, 2013 salutare!am pe masa tv-ul asta (chinezarie) , dar nu sunt sigur ce sasiu este pe placa am identificat urmatoarele inscrisuri : AK-TDA2111B , WD1F3841C. mai scrie OKANG (nu stiu ce ar putea fi)este echipat cu multifunctional TDA11106PS/V3/3 ,LA78040, sursa cu tranzistori Quote Link to comment Share on other sites More sharing options...
leoncris Posted December 20, 2013 Share Posted December 20, 2013 Cauta ... ELITE 14ES11, sau lasa mail in PM. Quote Link to comment Share on other sites More sharing options...
mercenarx Posted December 20, 2013 Author Share Posted December 20, 2013 multumesc leoncris,cred ca asta e schema,cu aproximatie, deoarece la mine alimentarea este simetrica..un dump pentru multifunctionalul asta ? manifestare defect :imaginea translatata cu cca 5cm in jos (banda neagra de 5 cm in partea superioara a ecranului)am schimbat LA78040 ,fara rezultat , acum as incerca un dump (conzii pe +15v si -15v sunt ok) Quote Link to comment Share on other sites More sharing options...
leo 17 Posted December 20, 2013 Share Posted December 20, 2013 schimba condesatori de 470 de micro la 25 de v si cel de 470 micro la 16 v pune noi ... Quote Link to comment Share on other sites More sharing options...
mercenarx Posted December 20, 2013 Author Share Posted December 20, 2013 a fost de vina un cond ceramic de cativa nano din pin 1si 7 LA78040 (nu pot sa specific exact ,cred ca e C404 ,fiindca nu se cunoaste marcajul bine, si schema ioc)m-a fatait ceva ,deoarece cu un alt dump portiunea de sus ramanea foarte putin nedesfasurata (cam 1cm) astfel ca am tras concluzia gresit ca e din dumpmi=am dat seama ca e defect de hard cand am vazut ca din service nu se poate modifica Vposi mai mult de atat cat era (in sensul celalalt , se modifica cat cuprindea...)in ms se intra cu V- la minim ,MENU-6483. Quote Link to comment Share on other sites More sharing options...
leoncris Posted December 21, 2013 Share Posted December 21, 2013 Adica ... 0.033uF. Quote Link to comment Share on other sites More sharing options...
mercenarx Posted December 21, 2013 Author Share Posted December 21, 2013 Adica ... 0.033uF.exact ...insa m-am bucurat prea devreme...acum, este exact pe dos: imaginea este deplasata in sus , astfel incat se vede JOS nedesfasurat cam 3-4 cm..la un moment dat se desincronizeaza si pe H si pe V , isi revine pentru scurt timp, iarasi se desincronizeaza, aleator se defazeaza imaginea; la un moment dat se opreste complet... ce mai ,face aiurea rau de tot.am incercat mai multe dumpuri , inclusiv cu mem goala...nimicposibil multifunctional? cuart?am intalnit astfel de defecte date de jungla STV224X H, dar de multifunctional de acest tip inca nupareri?thx! Quote Link to comment Share on other sites More sharing options...
mercenarx Posted December 30, 2013 Author Share Posted December 30, 2013 dupa indelungi cautari ,schema este asta : http://www.eserviceinfo.com/downloadsm/ ... 29TOP.html l-am repus pe masa hotarat sa ma razbun (nu ma mai grabeste nimeni acum, sper sa-i dau de cap..) este ultima zi in care intru in atelier, chiar am timp sa ma agit cu sondele si cu testerele.. pana acum am exclus dump-ul si tda 78040 ma apuc sa-i fac o cura de condensatori (cu toate ca tv-ul a functionat mai putin de un an...) Quote Link to comment Share on other sites More sharing options...
leoncris Posted December 30, 2013 Share Posted December 30, 2013 Nu mai ai bin_ul original ? Quote Link to comment Share on other sites More sharing options...
mercenarx Posted December 30, 2013 Author Share Posted December 30, 2013 nu am inteles initial--ba da il am--, dar am pus memorie goala si face la fel... Quote Link to comment Share on other sites More sharing options...
leoncris Posted December 30, 2013 Share Posted December 30, 2013 Deci cu bin_ul original facea la fel , deplasare imagine , desincronizare ... , sau doar imaginea deplasata si desincronizarea a aparut dupa schimbare bin si C_ul de 33n ? Quote Link to comment Share on other sites More sharing options...
mercenarx Posted December 30, 2013 Author Share Posted December 30, 2013 da, exact, acum face cu cu orice fel de bin , la fel.. Quote Link to comment Share on other sites More sharing options...
leoncris Posted December 30, 2013 Share Posted December 30, 2013 Cu alt C_u ai incercat ?LA78040 este cel original , sau ... ? Quote Link to comment Share on other sites More sharing options...
mercenarx Posted December 30, 2013 Author Share Posted December 30, 2013 e unul din dezmembrari, deci ar fi bun...zic eu Quote Link to comment Share on other sites More sharing options...
leoncris Posted December 30, 2013 Share Posted December 30, 2013 Eu asi reface conditiile initiale , apoi asi schimba doar C_ul.Banuiesc ca tensiunile sunt masurate si ... ok ! Quote Link to comment Share on other sites More sharing options...
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