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catalin004

home cinema samsung ht-x20

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am la reparat un home cinema modelul prezentat in titlu...sistemul merge perfect...dupa 10 min de functionare la volum aprox. 80% apare protection pe display....daca il repornesc mai merge dar nu pt mult timp....

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intra protectia termica. schimba pasta termoconductoare.

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A fost primul lucru pe care lam facut...apoi am gasit 2 condensatori aproape sparti,nepolarizati, 0,47/100v,cred ca din stiroflex....am pus altii si la fel....mentionez ca mai am un astfel de sistem care de opreste dupa circa 3 minute de functionare

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Ati verificat daca nu se incalzeste exagerat unul dintre finalii audio?Dati radiatorul jos si vedeti!

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o sa verific azi.....langa ei sunt niste bobine imbracate in ferita....aseta se incalzesc excesiv....si unele chiar foarte tare

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da....verificate....montate altele de impedanta chair si mai mare si la fel....sa fie din acei condensatori?cred ca sunt pusi pe iesire la masa printr-o rezistenta....si ciudat ca se incing bobinele acelea

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Daca sunt din iesire la masa prin rezistente de valoare mica este filtrul antioscilatie si fara el se supraincalzeste finalul.

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o sa verific rezistentele de la acest filtraj si o sa pun condensatori noi....revin cu detalii

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