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cristeama

kenstar 20'' S2001C

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va salut, am urmatoarea problema la acest tv. sasiu ST-v02/06 cu procesor ST92195c7b1 / MRP, nu am ceva defect !, doar ca procesorul da comanda on/off in mod repetat la interval de 5-6sec., toate tensiunile sunt bune, din 15v se obtin cei 8v necesari Hout iar procesorul cind cupleaza cind decupleaza alimentarea stabilizatorului de 8v iar prin releu si bobina releului de demagnetizare, am facut urmatoarele incercari :

 - am decuplat traful de linii ,am conectat consumator bec - se comporta la fel,  am scos total din circuit traful de linii - nici o modificare

 - am cuplat sursa universala in locul celei din tv. - se comporta la fel

 - am pus memorie goala - nici o modificare, am incarcat o multime de dumpuri gasite atit la noi pe forum cit si pe net in general  - se comporta la fel

va rog sfatuiti-ma cum sa procedez in continuare, stima

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Pai sigur e ceva defect.Alimentarea procesorului e ok?

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Pai 4,8v nu-i ok trebuie 5V acolo.E stereo cumva?ce mai are pe SCL,SDA in afara de jungla si memorie?

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- tens. alim. procesor pin21 este 5v stabil ,am masurat pe o alta scala de acolo eroarea, comunicarea pe magistrala se face cu mem., cu jungla si cu selectorul, am deculpat selectorul si nici o schimbare

da, este versiunea stereo

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am incercat dumpuri - nimic schimbat, protectie la pin 55 xray am scos traful de linii - nimic schimbat,

- cum se incarca un soft nou la procesor ?, si unde se gaseste ?

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