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ELFORUM - Forumul electronistilor

Tv LCD Myria 20735

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Tv nu se lumineaza,invertoare(P2803NVG,BIT3193G-SMD-uri toate)arse.In rest functioneaza normal.As avea nevoie de schema modulului "sursa-invertori",pentru a intelege functionarea.Sunt acolo si o multime de tranzistori si rezistente smd.Poate are cineva si vreo sugestie...Cu stima.

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Aceeasi placa am intalnit o de mai multe ori si am gasit doar un tranzistor ars dar acum am dat de belea .am schimbat condensatorul de 220uf am schimbat tranzistorul a pornit pentru o secunda si s a defectat cu tot cu celalat tranzistor cu care are grila in paralel.Epuizand stocul am pus de proba Si4532 in locul celor arse si desi este la 3 amperi functioneaza fara probleme dar se incalzesc in timp.Intre timp mi au sosit piesele original P2803nvg care s au ars instant am pus AO5606 , FDS8958a toate s au defectat instant am montat din nou Si4532 si surpriza merge .

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