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Costin (4033)
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Mesaj Scris de misaelectronic la data de Lun 19 Mar 2018 - 9:59

SALUTARE TUTUROR MEMBRILOR! Bine v~am regasit! Am un tv led SAMSUNG model UE46C8705XS MODEL SASIU SURSA PD46AF2_ZSM (BN44_00362A) de la un prieten care mi a spus ca sa stins deodata! verificand tv ul am constatat ca se aude un ticait in interior ca la un releu l-am desfacut si am localizat releul am verificat conzi diode shotky ledul sta aprins dar nu porneste momentan nu am descoperit nimic ars poate a mai intalnit cineva defectul acestui aparat v-as fi recunoscator cu un sfat o idee de cautare defect! Va multumesc!
misaelectronic
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Mesaj Scris de Costin la data de Lun 19 Mar 2018 - 10:33

Deconecteaza cablul dintre sursa si placa de baza. Daca sursa este buna, se va aprinde backlight-ul.
Costin
Costin
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Mesaj Scris de misaelectronic la data de Lun 19 Mar 2018 - 10:56

Costin a scris:Deconecteaza cablul dintre sursa si placa de baza. Daca sursa este buna, se va aprinde backlight-ul.
ok!am deconectat si nu se aprinde backlight-ul in schimb ticaie releul incontinuare ca si cum ar intra sursa in protectie
misaelectronic
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Mesaj Scris de Costin la data de Lun 19 Mar 2018 - 11:04

Sursa defecta.
Condensatori electrolitici uscati/umflati/ESR mare?
Costin
Costin
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Mesaj Scris de misaelectronic la data de Lun 19 Mar 2018 - 11:10

Costin a scris:Sursa defecta.
Condensatori electrolitici uscati/umflati/ESR mare?
deocamdata nu am gasit condensatori umflati fizic mai masor cu atentie,si tin sa precizez ca invertorul este situat in sursa,poate sa fie afectat?
misaelectronic
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Mesaj Scris de Costin la data de Lun 19 Mar 2018 - 14:21

Masoara cu ESR-metrul.
Verifica elementele active, in special diodele, sa nu fie in scurtcircuit.
Costin
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