ababiteodor Posted November 1, 2012 Share Posted November 1, 2012 Buna seara. Tv-ul a avut siguranta arsa, strg(explodat) si c615 (220n)in paralel cu d607 de pe bara B+C-ul era carbonizat ceia ce cred ca adus la distrugerea sursei.Am inlocuit piesele defecte,am masurat c,r,d,tensiuni, dar becul nu se aprinde.Tensiunile la strg6653 sunt;1-290v 2-0v, 3-0v, 4-oscileaza intre11v-14v, 5-011v si 014v.Sasiu 3y11 LA76810A, STV5348/H, LA7840 Link to comment Share on other sites More sharing options...
popa ionut Posted November 1, 2012 Share Posted November 1, 2012 Ce cauta condesatorul ala de 220nF paralel cu dioda de pe bara mare ??da-l jos si pune unul de 220pF s-au 470pF .... Link to comment Share on other sites More sharing options...
ababiteodor Posted November 1, 2012 Author Share Posted November 1, 2012 In scheama este 2200p eu am pus 220p(nu220nf) dar oricum nu asta-i buba. Link to comment Share on other sites More sharing options...
popa ionut Posted November 1, 2012 Share Posted November 1, 2012 In scheama este 2200p eu am pus 220p(nu220nf) dar oricum nu asta-i buba.Asa ai postat mai sus..in fine si la ce bec te refereai?ai pus bec pe bara mare si nu se aprinde?sau ??nu inteleg.... Link to comment Share on other sites More sharing options...
ababiteodor Posted November 1, 2012 Author Share Posted November 1, 2012 Am scos tranzistorul final linii si am pus bec intre colector si masa. Link to comment Share on other sites More sharing options...
popa ionut Posted November 1, 2012 Share Posted November 1, 2012 Verifica in principiu ce am incercuit si schimba optocuplorul.. Link to comment Share on other sites More sharing options...
ababiteodor Posted November 1, 2012 Author Share Posted November 1, 2012 Am schimbat optocuplorul am masurat d, r, c, tr si nimic. Sasiul pe care il am este putin diferit de schema, R605 este de 1M si vine din +C607 in pin 5 STRG6653 Link to comment Share on other sites More sharing options...
popa ionut Posted November 1, 2012 Share Posted November 1, 2012 Elimina toti consumatorii din secundar si lasa decat controlul sursei....probabil ca tv tau sa fii fost rau"fulgerat"sa zic asa ori a suferit o descarcare puternica(uite-te pe cablaj si vezi sa daca are urme de descarcari electrice) si sa ai scurt pe una din barile mici de tensiune.. Link to comment Share on other sites More sharing options...
ababiteodor Posted November 2, 2012 Author Share Posted November 2, 2012 Da ,am comis o greseala la rezistena R600 -022ohmi am pus 2,2ohmi. Tv rezolvat. Va multumesc. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.