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belowsky

Platinium sasiu PTZM03

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Salut!! Mi-a venit teveu din subiect,are stby,tensiuniile sant bune.La pornire face un mic tacait si ramane in stby,daca scot bu din linii pe baza am semnal syncro bun,daca-l pun la loc ,se blocheaza driverul.Bu e bun,driverul la fel, STV2248c schimbat ,simptomul ramane.As avea nevoie de schema,si de idei.

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Salut, eu as crede ca ai vreun consum exagerat pe linii ( trafo linii, condensatori de recuperare, deflexie linii, final cadre, sau vreo tensiune de pe trafo linii ).Poti verifica daca e vorba de vreun consum exagerat astfel:in serie cu colectorul finalului linii ii pui o rezistenta cam de 56 ohmi si masori caderea de tensiune la bornele acesteia.Procedeaza cum ti-am zis si spune-ne rezultatul. :da

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Va multumesc,pt scheme si sfaturi,am dat diagnostic trafo-lini si clientul nu a mai dorit reparatia.Totusi consum nu avea, ca asa zis U1, nu scadea deloc,nici in momentul pornirii.Din trafo-linii venea flyback necorespunzator si bloca STV2248 .Cred.

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