parvuion27 Posted October 13, 2012 Share Posted October 13, 2012 va rog mult daca ma puteti ajuta am un tv saba sasiu itc oo8 porneste normal si dupa circa 3,4 minute intra an scurt dioda zener dp27 sau dp 28 de 27v ati mai avut careva aceast defect va multumesc Quote Link to comment Share on other sites More sharing options...
naebv Posted October 13, 2012 Share Posted October 13, 2012 Schema o descarcati de aici: http://www.eserviceinfo.com/downloadsm/ ... 70170.html Quote Link to comment Share on other sites More sharing options...
parvuion27 Posted October 13, 2012 Author Share Posted October 13, 2012 Schema o descarcati de aici: http://www.eserviceinfo.com/downloadsm/ ... 70170.htmlschema o am, dar ma gandeam daca a mai avut cineva acest defect Quote Link to comment Share on other sites More sharing options...
parvuion27 Posted October 13, 2012 Author Share Posted October 13, 2012 nu stie nimeni cauza arderi diodelor zener dp27 si dp28? Quote Link to comment Share on other sites More sharing options...
parvuion27 Posted October 13, 2012 Author Share Posted October 13, 2012 MENTIONEZ CA DACA NU SE ARD DIODELE SE ARDE FINALU DE LINI S2055N ,SA FIE CUMVA TRAFU FE LINI? Quote Link to comment Share on other sites More sharing options...
parvuion27 Posted October 13, 2012 Author Share Posted October 13, 2012 AM SCOS FINALU LINI SI AM PUS UN BEC 60W TENSIUNEA AJUNGE LA 145V SI AN CATEVA SECUNDE SE ARD UNA DIN DIODELE ZENER DP27 SAU DP28 PROBABIL CA SURSA NU STABILIZEAZA TENSIUNEA DACA MA POATE AJUTA CINEVA CARE SE PRICEPE BINE Quote Link to comment Share on other sites More sharing options...
Toni Marginean Posted October 14, 2012 Share Posted October 14, 2012 Tensiunea +B este prea mare din aceasta cauza se arde finalul linii. Problema este in sursa. Verificati optocuplorul si inca o data componentele din sursa, preferabil cu cate un pin scos din circuit. Quote Link to comment Share on other sites More sharing options...
elmar Posted October 14, 2012 Share Posted October 14, 2012 AM SCOS FINALU LINI SI AM PUS UN BEC 60W TENSIUNEA AJUNGE LA 145V SI AN CATEVA SECUNDE SE ARD UNA DIN DIODELE ZENER DP27 SAU DP28 PROBABIL CA SURSA NU STABILIZEAZA TENSIUNEA DACA MA POATE AJUTA CINEVA CARE SE PRICEPE BINENu stiu daca e cineva "care sa se priceapa" sa va spuna exact ce e defect ! Asta se descopera dupa efectuarea unor teste /masuratori ale componentelor si tensiunilor din zona banuita defecta ...ati verificat tot din zona marcata cu rosu? Quote Link to comment Share on other sites More sharing options...
parvuion27 Posted October 14, 2012 Author Share Posted October 14, 2012 AM SCOS FINALU LINI SI AM PUS UN BEC 60W TENSIUNEA AJUNGE LA 145V SI AN CATEVA SECUNDE SE ARD UNA DIN DIODELE ZENER DP27 SAU DP28 PROBABIL CA SURSA NU STABILIZEAZA TENSIUNEA DACA MA POATE AJUTA CINEVA CARE SE PRICEPE BINENu stiu daca e cineva "care sa se priceapa" sa va spuna exact ce e defect ! Asta se descopera dupa efectuarea unor teste /masuratori ale componentelor si tensiunilor din zona banuita defecta ...ati verificat tot din zona marcata cu rosu? dupa masuratori facute am gasit rp020 pe ia scrie R68 5% masurata are 0,6 sa fie ia cauza defectului? astept sfaturi Quote Link to comment Share on other sites More sharing options...
Toni Marginean Posted October 14, 2012 Share Posted October 14, 2012 R68 inseamna 0,68 ohmi, deci dvs. masurand 0,6 inseamna ca este buna! Quote Link to comment Share on other sites More sharing options...
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