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PT92 merge testat fara tuner?

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tv orion chassis pt92, tda9351ps/n2/2i0851,la mine a ajuns doar chassiul ,care este fisurat in zona trafolinii,a-m refacut cablajul,avea si mosfetul din sursa crapat,pesemene ca a fost bagat in priza dupa cate cred eu,posibil sa fi avut descarcari din cauza fisurii trafo linii si atunci a crapat si sursa,a mai fost chinuit de cineva in zona trafolinii,problema sta in felul urmator ,totul e 60% ok,tv ul pornea cateva secunde si cadea in stby,tensiuni 0k,3v3,5v,8v,12v,16v,200v,45v 115v.etc,verticalul lucreaza,a-m dat memoria afara ,a-m pus una goala,a-m rescris alta cu ceva dumpuri,dar fara rezultat,a-m lasat chassiul fara memorie ,tv ul porneste cu un rastru albastru in partea de sus a ecranului care dispare in cateva secunde,dar tv-ul ramane pornit pe fond negru,mi-am zis ca e normal fara dump,sapand prin el a-m observat ceva rugina la tuner,asa ca l-am dat afara,a-m dat capacele tunerului jos unde era destul de multa rugina a acoperit toate picioarele,m-ai mult ca sigur defect,pe tuner 5v scl sda pareau ok fara osciloscop,intrebarea me e trebuie sa mearga acest chassis si fara tuner? nu de alta dar e posibil sa nu a-m de proba momentan,a-m cautat prin ce am,sau trebuie sa sap mai departe?VA MULTUMESC

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