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ELFORUM - Forumul electronistilor
Myhayxx

tv profilo 4055txt

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Am primit un batranel la reparat.Am inlocuit electrolitici la greu ,nu stiu daca a scapat ceva neverificat.Am un zgomot in el ca si cum ar descarca ceva .Am schimat si lm7812 care scotea vreo 3v.Am verificat pe intuneric ,ciuperca de la tub inlocuita ,Nu gasesc nimic.Curios ca la acest sasiu bu808 nu incalzeste deloc ,cred ca ar merge si fara radiator.Cand reglez scren-ul fluieratul isi modifica frecventa.Am pornit si cu soclul de la tub dat jos ,tot nu scap de zgomot.Chiar si cand il alimentez la retea fiind in stby are un zgomot pe moment.

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