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ELFORUM - Forumul Electronistilor
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Emil 1986

defect ciudat monitor crt Philips model 107e41

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cate o data porneste normal dar se opreste inalta dupa 1-2min cate o data nu pleaca inalta si trebuie sa il scot din priza il las ceva timp si iar face la fel.tranzistorul este bu4522af si la masuratoare pare bun dar l-am inlocuit si la fel face.unde ar trebuii sa ma mai uit?

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Incepe mai intai cu sursa,condensatori uscati etc,monitoarele crt au o sursa de baleaj care este comandata de sincroprocesor.

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Vezi daca e in regula condensatorul prin care primeste in baza tranzistorul final linii impulsurile.De obicei se cam due dupa cativa ani de functionare.

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Uitate putin si la aspectul trafului, nu e unflat s-au fisurat. Se mai intampla sa dea coltul dar nu de tot si te mai amageste cu cateva min.de functionare.

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l-am lasat astazi dupa ce s-a oprit inalta cam 20min si cand am pus mana pe rad la tranzistor frigea.maine schimb condesatorii sa vad cum se comporta pe urma.mersi de raspunsuri

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