doru tv Posted December 19, 2012 Share Posted December 19, 2012 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! Link to comment
dan-a2 Posted December 19, 2012 Share Posted December 19, 2012 Ai doi tranzistori smd in baleiaj vertical> verifica !! Link to comment
doru tv Posted December 19, 2012 Author Share Posted December 19, 2012 Am verificat tranzistorii si sunt ok. Link to comment
dan cod Posted December 19, 2012 Share Posted December 19, 2012 Din service se poate modifica dimensiunea? Link to comment
doru tv Posted December 19, 2012 Author Share Posted December 19, 2012 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. Link to comment
doru tv Posted December 19, 2012 Author Share Posted December 19, 2012 bobina de deflexie v am verificato are 9ohm,am dato afara si vizibil pare ok,posibil stv-ul defect? Link to comment
naebv Posted December 19, 2012 Share Posted December 19, 2012 Inlocuiti R627=1,8ohmi, C608=47nF, C615=1000uF; verificati R630=8,2M. Link to comment
PINTI Posted December 20, 2012 Share Posted December 20, 2012 Mai ai acolo o dioda 1N4007. Masurata in montaj pare buna. Dupa inlocuirea ei rastrul se va desfasura. Succes. Link to comment
ionbel1 Posted December 20, 2012 Share Posted December 20, 2012 Verificati si rezistenta dintre pinii 8si 9 R 619 . Link to comment
naebv Posted December 20, 2012 Share Posted December 20, 2012 Mai ai acolo o dioda 1N4007. Masurata in montaj pare buna. Dupa inlocuirea ei rastrul se va desfasura. Succes.In prima postare este mentionat ca D602 (=1N4007 intre pinii 10 si 2 la IC600) a fost schimbata... Link to comment
BUGHIU Posted December 20, 2012 Share Posted December 20, 2012 Daca se misca neordonat,posibil sa aveti ceva contacte imperfecte sau rezistente/cablaj fisurate !! Link to comment
Mihai78 Posted January 25, 2015 Share Posted January 25, 2015 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 Link to comment
dan cod Posted January 25, 2015 Share Posted January 25, 2015 Tensiuni bune?Di service mișca ceva? Link to comment
Mihai78 Posted January 25, 2015 Share Posted January 25, 2015 Cam asa arata tensiunile : pin1=10,8vpin2=10,3vpin3=4.7vpin4=6,5vpin5=4.3vpin6=0pin7=5,6vpin8=6,5vpin9=4.1vpin10=26vpin11=0v In service nu am intrat....mentionez ca are un cablaj execrabil Link to comment
modoran Posted January 25, 2015 Share Posted January 25, 2015 Dioda 1N4007, cea dintre pinii 10 si 2 intrerupta sau cablaj fisurat. Ai mentionat ca ai schimbat-o, dar logica spune ca ea este intrerupta. Link to comment
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