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ELFORUM - Forumul electronistilor

Stand by tv Philips 20PT1547/01

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Televizorul este tipul PT92P echipat cu procesorul TDA9351PS/N2/2I/1293 ,iar in sursa are integratul ICE1QS01 ,problema lui este ca in momentul in care il trec in standby acesta se opreste si porneste imediat fara ai da comanda de pornire.Am verificat tensiunile si sunt bune ,tranzistori de pe circuitul de standby la fel sunt buni .Posibil sa fie procesorul? Mentionez ca i-am schimbat si memoria pe care am inscriso cu un damp bun si la fel face.

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eu intai as fi verificat tensiunea pe pinul de stand by procesor in timpul functionarii si in scurtul moment cat tv-ul trece in stand by,eventual las in aer acest pin si dau comanda din telecomanda si masor tensiunea pe acest pin.trebuie luat in calcul si circuitul de reset si tastatura tv-ului sa nu fie defecta(pushbuton blocat sau cu rezistenta).circuitul de stand by cu tranzistoare si memoria am inteles ca le-ati verificat.ps: in tv-urile mai vechi cu releu se sudau contactii acestuia sau in cele cu comutator electronic intrau tranz in scurt.

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