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Reparare radio videoton R999F


imreberes

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Am primit la reparat un radio de acest tip.  vt r999 f.pdf (radiomuseum.hu)  ,   R999F Radio Videoton; Székesfehérvár, build 1960– (radiomuseum.org)   A venit cu simptoma de se aude foarte incet. Pe UM prinde doar 2 posturi. A mai fost reparat de un Dorel, care i-a pus o mufa DIN, posibil sa fie folosit ca amplificator.

Pana acum a primit un nou condensator de filtraj (primul de 47uF)cele doua condensatoare de langa potentiometru ce aveau 10nF (unu era gasit cu 15pF!!!! altul cu 13pF!!!). Rezistenta de 10M din grila ech81 era intrerupta ( a primit unu de 7,8M). Circuitul de NF de la difuzor lipseste. Transformatorul de alimentare e pus pe 240V. partea audio functioneaza, cel putin cu mufa din.

Aveti vreo idee la ce sa ma mai uit?

radiomuseum-videoton-r999f-476363.pdf

Edited by imreberes
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