vl78stc Posted October 24, 2016 Share Posted October 24, 2016 (edited) salutare acest tv are imaginea ca in poze in doua cu semnal antena si una fara semnal,am schimbat cond.primar secundar, am schimbat ci baleiaj vertical si toti condensatori elect.aferenti,am masurat tensiuni U1=118V. BV=+/_14V,video=183v,tranzistorii de pe placa video sint buni,verificat lipituri,un sfat ce ar putea fi defect? suspectez tubul sau trafo https://s6.postimg.org/whm70wqep/20161024_134829.jpg https://s6.postimg.org/cbip20ur5/20161024_134913.jpg https://s6.postimg.org/59krftr5d/2http0161024_134920.jpg Edited October 24, 2016 by vl78stc Quote Link to comment Share on other sites More sharing options...
iuliantv Posted October 24, 2016 Share Posted October 24, 2016 cred ca este un c fix in baleaj vertical ,m-a chinuit si pe mine un asemenea tv cu acest defect Quote Link to comment Share on other sites More sharing options...
vl78stc Posted October 24, 2016 Author Share Posted October 24, 2016 am pus sasiul pe alt tub si bobina si se manifesta la fel. Iuliantv mai ti minte valoarea si zona condens.fix sunt doi de1n, 3 de 100n, 1 de 22n si 2 de 680p,electroliticii sunt schimbati noi,diode ok mai astept sfaturi,multumesc Quote Link to comment Share on other sites More sharing options...
dan cod Posted October 24, 2016 Share Posted October 24, 2016 Filtrul antioscilatie e ok?Cu ce e facut BVul? Quote Link to comment Share on other sites More sharing options...
Florinel TV Posted October 24, 2016 Share Posted October 24, 2016 (edited) Eu cred ca este rezistenta serie cu deflexia la masa intinsa Edited October 24, 2016 by Harhas Florin Quote Link to comment Share on other sites More sharing options...
vl78stc Posted October 24, 2016 Author Share Posted October 24, 2016 ci baleiaj stv9302a Quote Link to comment Share on other sites More sharing options...
iuliantv Posted October 24, 2016 Share Posted October 24, 2016 22 sau 100 suna cunoscut era verde sau maro,dar dupa cum spunea si d-nl Florin posibil ca rezistenta r404 sa fie si cauza,atentie aceasta rezistenta are valoare critica si cateva zecimi de ohmi poate influenta dimensiunea verticala ,conform schemei este de 2,7ohmi Quote Link to comment Share on other sites More sharing options...
vl78stc Posted October 25, 2016 Author Share Posted October 25, 2016 am verificat r404 r403 r408 r405 r 402 schimbat 402 face la fel, rezistentele au fost scoase din circuit iar r404-2,7ohmi am pus alta de 2,3 ohmi si nici o schimbare, o sa verific in continuare cadrele ce a mai ramas poate mai aveti idei.multumesc Quote Link to comment Share on other sites More sharing options...
surubarila Posted October 25, 2016 Share Posted October 25, 2016 Sanatate permanenta ! Daca ai osciloscop vezi in baza VT501 si compara cu oscilograma WF502 din schema.Am avut ceva similar si am o banuiala. Quote Link to comment Share on other sites More sharing options...
iuliantv Posted October 25, 2016 Share Posted October 25, 2016 incearca o memorie goala sau un dump,posibil sa fie dat peste cap din service menu Quote Link to comment Share on other sites More sharing options...
vl78stc Posted October 26, 2016 Author Share Posted October 26, 2016 am pus memorie din alt sasiu identic si la fel a facut,nu am avut goala momentan si nici osciloscop pentru colegul de mai sus multumesc de sfaturi si mai astept Quote Link to comment Share on other sites More sharing options...
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