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Probleme cadre 11ak30

doru tv

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Salut, am o problema ciudata cu vestitul sasiu 11ak30. A venit cu cadrele defecte ( ic600) si c610 uscat. Am inlocuit c631, c644, c610, d602, d610. Tensiunea de alimentare este de 26v iar problema este cu desfasurarea, care este de 3-4cm, miscandu-se neordonat in sus si in jos. Ce probleme credeti ca ar fi si ce ar mai trebui verificat? Multumesc anticipat!

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Imaginea este desfasurata cca 3-4 cm si vibreaza pe ecran. Tensiuni pe pinii integratului: pin1=16.4-16.8vpin2=25.2vpin3=4.2vpin4=7vpin5=4.3vpin6=gndpin7=1.2-1.4vpin8=2vpin9=4.3vpin10=25.9vpin11=0vNu pot sa-mi dau seama ce se intampla. Mentionez ca am schimbat 2 integrate TDA 8174aw, care au fost verificate pe un alt sasiu.

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  • 2 years later...

Va salut. Aceeasi problema o am si eu cu un 11AK30; am reparat defect linii BU si cond; a mers 30 de min dupa care imaginea s-a ingustat si am rastru doar 5 cm desfasurat in partea inferioara(intai apare dunga orizontala si la 5 sec se desfasoara) ; am schimbat conzi, integrat cadre , 1n4007 ; ce as mai putea verifica? Multumesc 

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