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Tv Proline PR1410G restarteaza


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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!

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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 by attilaa0
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