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eduard07

TV SCHNAIDER M35-21189 21M321

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Buna ziua,,,am acest defect la tv schnaider.,nu apare rastrul,sonorul este ok,muta canalele,dar apare doar aceste culori,fara a avea rastru normal (acei purici),imi poate da cineva o idee,cu ce sa incep ,va multumesc mult

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schimba circuitul de cadre. cred ca tda8177 si o sa mearga. si verifica cele 2 tensiuni care il alimenteaza, vin din traful de inalta daca sunt corecte.

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Si nu mai porni Tvul asa ca iti reteaza tubul si atunci e bai mare.100% BVul este defect.

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am verificat acum integratul ic301 si este un TDA8172 si avea pini dezlipiti,am refacut lipiturile si am schimbat si condesatorii C404 (era umflat) SI C405 in schema sunt de 2200uf la 50v,dar pe placa am gasit 470uf si pare ca nu era umblat,,am pus tot 470uf,,,,,am verificat tensiunule cea de -14v la mine e -9 si cea de +19v la mine e de 12v.La fel am doar aceste pete de culoare...sa ars oare circuitul?

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ti sa spus de 5 ori ce ai de facut......

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Foarte posibil sa se fi ars.Miceste screenul daca tot te joci asa cu el sa ramana tubul intreg.

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Nu trebuie sa fie crapat fizic sa fie defect!!! Poate sa se defecteze in n'spe moduri;inclusiv intrerupere interna....Deci,schimbati-l pana mai aveti ...tub intreg.... :da

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Multumesc mult pt sfaturi am schimbat intergatul ,in schema era figurat TDA 8172,dar pe placa SDV9302,am gasit original SDV.Am mai gasit si rezistenta R322 de 1ohm la 1W arsa,inocuita si asta si TV merge.,,in partea de sus a ecranului am o tunga neagra cam de 2cm,.am verificat tensiunea de 112v si e ok, dar difera tensiunile pt circuitul BV aia de -14 v e ok,dar aia de +19 la mine e 14 v,oare din cauza asta e acea dunga sus?MULTUMESC MULT :dans:

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Este putin 104V la Tvurile astea.Mai ai ceva defect in sursa.

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Banuiesc ca ati schimbat si condi de linga integrat;adica: C301!!!!! Schimbati-l neaparat pana nu ''pusca'' iar integratul....!!!!

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am schimbat si c301 ,,singura dif e acea tensiune de +19 la mine e 14 v,am verificat rezi de 1ohm e buna

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Intrati in service mode si ''trageti'' de acolo dimensiunea la normal....!!!

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Aceea tensiune atat a fost si cand functiona tv-ul!!! Intrati in service mode si ''trageti'' dimensiunea la normal!!

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Intrati in service mode si ''trageti'' de acolo dimensiunea la normal...!!!

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Intrati in service mode si ''trageti'' de acolo dimensiunea la normal!!

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