Jhn Posted April 24, 2015 Share Posted April 24, 2015 Salut !, As dorii un sfat,din partea celor cu experienta in legatura cu acest invertor defect. Schema electrica echivalenta CYCLE 60.20GE sasiu EPI5002 :http://i61.tinypic.com/2u8dixx.jpg Pe langa componentele banale care le-am gasit defecte,si se ard deobicei: rezistorul 22 ohmi/7W,diodele zener, diodele BYV26,rezistorii din driver,si cateva bucati IRFP450 dupa inlocuirea acestora,si eliminarea din circuit a tranzistorilor IRFP450,am masurat semnalul in grila axcestora,si observ un varf de tensiune pe care nu stiu cum sa-l elimin. Am pus de proba doi tranzistorii,si binanteles ca la pornire s-au facut "popcorn",iata semnlele in grila celor doua ramuri : G-S (AB):http://i57.tinypic.com/2dl3wqp.jpg G-S (CD):http://i57.tinypic.com/igbxc3.jpg Si "popcornul" in partea dreapta,in stanga sunt tr.originali care au scapat :http://i59.tinypic.com/2wrgq37.jpg Maine o sa-mi fac timp,si o sa-l i-au la "cernut",o sa verific si snuberele, totusi orice sfat e binevenit ! Cu stima ! Link to comment
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