attilaa0 Posted November 28, 2018 Share Posted November 28, 2018 Buna ziua!Acest tv are sasiu TX807 2081763C ,echipat cu TMP47c1637N-RA34,Tda 8842,24c04 ,telecomanda RCT-100. daca bag in priza se aprinde ledul rosu apoi trece in verde fara sa mai apas ceva,apare inalta si un rastru in curcubeu.Si apoi dispare inalta si trece in rosu ,apoi iarasi in verde.si tot asa. tensiunea in bu este de 105V si e stabila cu becul montat ,deci nu e din sursa.Am decuplat si BV dar apare linie ,insa fenomenul e aceasi. As proba un dump,dar nu am.Astept idei ce poate fi?Va multumesc! Quote Link to comment Share on other sites More sharing options...
dan-a2 Posted November 28, 2018 Share Posted November 28, 2018 (edited) Un dump din arhiva , nu stiu daca l-am scris vreodata >>se pare ca are alta terminatie dar incearca : tmp47c1637n-ra37.. tx807chas..zip Edited November 28, 2018 by dan-a2 Quote Link to comment Share on other sites More sharing options...
attilaa0 Posted November 28, 2018 Author Share Posted November 28, 2018 Multumesc!revin maine. Quote Link to comment Share on other sites More sharing options...
Florinel TV Posted November 28, 2018 Share Posted November 28, 2018 Daca apare curcubeu prima data verifica BV-ul el este cu probleme , cind porneste se aude biziit la deflexie? daca da atunci focalizarea soclu de pe tub Quote Link to comment Share on other sites More sharing options...
attilaa0 Posted November 29, 2018 Author Share Posted November 29, 2018 (edited) Am probat dumpul ,nici o schimbare,nu e nici din bv sau focalizare. O schema se poate? Defect rezolvat!Rezistenta RL45 care face tensiunea negativa -11v pentru BV intrerupta.M-a fentat un pic ca este cu TDA9302 care dupa datasheet lucreaza cu +12v si masa.Insa la mine era cu tensiuni simetrice de +12V si -11V. Schema se gaseste aici:https://elektrotanya.com/thomson_tx807_telefunken_tx807.pdf/download.html Edited November 29, 2018 by attilaa0 Quote Link to comment Share on other sites More sharing options...
Florinel TV Posted November 29, 2018 Share Posted November 29, 2018 Acum 1 oră, attilaa0 a spus: Am probat dumpul ,nici o schimbare,nu e nici din bv sau focalizare. O schema se poate? Defect rezolvat!Rezistenta RL45 care face tensiunea negativa -11v pentru BV intrerupta.M-a fentat un pic ca este cu TDA9302 Deci am avut dreptate Quote Link to comment Share on other sites More sharing options...
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