catalin004 Posted March 13, 2014 Share Posted March 13, 2014 Am gasit final orizontal defect....apoi optocuplor si condensatorul 2423Am pus alt optocuplor normal, cu 4 picioare (nu am avut cu 6)....tv porneste in stby, iar la comanda on led-ul micsoreaza intensitatea iar liniile pleaca dupa ~30 sec....tensiunea pe jungla este normalarog un mic ajutoor Link to comment
dan cod Posted March 13, 2014 Share Posted March 13, 2014 Pune acolo ce trebuie.E pretentios in zona aia.Mai este un BC acolo parca BC369 daca bine tin minte si nu merge cu akt tip.Impulsuri din jungla banuiesc ca ies. Link to comment
catalin004 Posted March 13, 2014 Author Share Posted March 13, 2014 Da ies impulsuri...BC -ul de pe stby sau cel de dupa optocuplor?Daca este cel de dupa nu l-am schimbat deloc Link to comment
dan cod Posted March 13, 2014 Share Posted March 13, 2014 Nu stiu sigur nu am schema in fata.Dar e in zona optocuplorului.Nu-i greu de gasit. Link to comment
catalin004 Posted March 13, 2014 Author Share Posted March 13, 2014 Da...este un BC368....l-am masurat si da bine....trebuie sa gasesc optocuplor Link to comment
Meta-fizica Posted March 13, 2014 Share Posted March 13, 2014 Poate spui si ce tensiuni ai in secundare , recuperate . Link to comment
catalin004 Posted March 13, 2014 Author Share Posted March 13, 2014 43V la BV, 144 pt tub (cam mikca), si 13,4V.....tot la tub parcaIn fine nu vad ce rost ar avea astea....Am 96V in C final linii, si 9,2V dupa micul chopper Link to comment
catalin004 Posted March 13, 2014 Author Share Posted March 13, 2014 Vreau si eu o serie la optocuplor....nu il mai am pe cel vechi.... Link to comment
Meta-fizica Posted March 13, 2014 Share Posted March 13, 2014 Rostul este de a stabilii daca sursa este OK .In cazul asta , trebuie schimbat optocuplorul.La cresterea curentului prin led , implicit prin tranzistor , o ia pe aratura la frecvente mari daca nu este comandat corespunzator. Link to comment
dan cod Posted March 13, 2014 Share Posted March 13, 2014 CNX82 parca este pus acolo.Impulsuri ies din jungla? Link to comment
catalin004 Posted March 13, 2014 Author Share Posted March 13, 2014 Sursa este ok....imi ia comanda on/off, are impulsuri in hout pe jungla( verificate cu osc)...doar ca pleaca dupa 20-30 sec....daca il pornesc si il opresc imediat, merge normal, adica liniile pleaca Link to comment
catalin004 Posted March 17, 2014 Author Share Posted March 17, 2014 Am gasit un CNX62,, si face la fel...porneste dupa 13-14 secunde acum Link to comment
elmar Posted March 17, 2014 Share Posted March 17, 2014 trebuie verificate toate piesele "incercuite" cu rosu...si verificati eventualele "lipituri reci"(mai ales la pinii trafului linii 3-4) sau fisuri fine ale cablajului!(in acea zona) Link to comment
catalin004 Posted March 17, 2014 Author Share Posted March 17, 2014 la mine lipseste 3429 si cealalta cu RES scris in schema 3435 cred.....mai verific acummultumesc Link to comment
catalin004 Posted March 17, 2014 Author Share Posted March 17, 2014 In pin 5 de la optocuplor nu ar trebui sa am in jur de 9V? Link to comment
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