dorinromeo Posted September 6, 2012 Share Posted September 6, 2012 am un tv ieftin Leko, diagonala 21'', fara culoarea verde (sau galben, scuze, nu prea ma pricep). are doar rosu si albastru. va rog spuneti-mi ce piesa ar putea fi arsa sau lipita necorespunzator. model 21QX-H002, pe placa cu circuite scrie P1470A03(100325) ver.A Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 6, 2012 Share Posted September 6, 2012 Daca placa TK e cu tranzistori atunci BF422 pe tunul de verde este defect. Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 6, 2012 Author Share Posted September 6, 2012 placa TK adica cea din capatul tubului? daca da, are 3 tranzistori, C2462 T Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 6, 2012 Share Posted September 6, 2012 Vezi ce tensiune ai pe catodul de verde si pe rosu si albastru.Nu iese din discutie nici tubul. Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 6, 2012 Author Share Posted September 6, 2012 te rog spune-mi cum sa il masor. Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 6, 2012 Share Posted September 6, 2012 Schimba tranzistorul pe G prima data. Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 6, 2012 Author Share Posted September 6, 2012 nu ajung azi la un magazin de piese. e corect daca inlocuiesc (de proba) tranzistorul de pe G cu unul din celelalte doua? ar trebui sa vad daca tranzistorul e problema? Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 6, 2012 Share Posted September 6, 2012 E corect asa.Daca tranzistorul e problema se va muta defectul pa alta culoare. Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 6, 2012 Author Share Posted September 6, 2012 am gasit problema unde nu ma asteptam. la receiverul de focussat. am deconectat scartul si am butonat in meniul tv-ului. are cateva simboluri verzi, deci, merge green-ul. acum voi improviza o antena simpla sa vad daca prind vre-o imagine, desi intre doua dealuri inalte ma cam indoiesc. dar te tin la curent. merci de ajutor Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 6, 2012 Share Posted September 6, 2012 Osdul deci se vede bine? Dupa mine tot tvul e defect. Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 7, 2012 Author Share Posted September 7, 2012 da, ai dreptate. m-am pacalit singur. OSD-ul are verde. am schimbat cablul de scart, am incercat cu cablu de antena normala, l-am conectat la laptop la S-video si am ajuns la concluzia ca tot TV-ul e defect. acum, ce ar fi de facut? m-as baga si eu manuta in el, dar sunt cam prea incepator. daca as sti unde sa caut si ce piesa ar fi de schimbat, m-as descurca sigur. asa ca va rog dati-mi un sfat: de unde sa incepsi, am uitat sa-ti spun: am schimbat ieri tranzistorii intre ei dar tot verdele lipseste, deci sunt OK Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 7, 2012 Share Posted September 7, 2012 Scxhimba intre ele intrarile de la placa tk intre verde de ex si rosu sa vezi atunci ce lipseste. Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 7, 2012 Author Share Posted September 7, 2012 am schimbat rosu cu verde intre ele si am constatat ca am si verde, si albastru si mult rosu. ce sa inteleg? Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 7, 2012 Author Share Posted September 7, 2012 exista posibilitatea sa reglez culorile fiecare in parte? cum pot imtra in setarile de service? sau pot sa resetez ca si computerul? Quote Link to comment Share on other sites More sharing options...
dorinromeo Posted September 8, 2012 Author Share Posted September 8, 2012 l-am ajustat din service meniu, i-am redus la minim rosu si albastru si am intarit cat se poate verdele. totusi nu e ce trebie. rosu e cam prea puternic, desi e la minim. Quote Link to comment Share on other sites More sharing options...
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