dosa Posted September 27, 2007 Share Posted September 27, 2007 ma lupt cu un l6.2, daca poate cineva sa ma ajute cu un sfat.dupa aprox10-15 minute de functionare se duce bu1508 din linii.(se supraincalzeste)comanda lui pare a fi buna, tensiunea de alimentare ok... :prayer: Link to comment
lulu07 Posted September 27, 2007 Share Posted September 27, 2007 bine zis "pare"...... Link to comment
Guest rbrtoctavian Posted September 27, 2007 Share Posted September 27, 2007 Doar un sfat- suspect condensatorul de recuperare. Link to comment
trinetservice Posted September 27, 2007 Share Posted September 27, 2007 bobinuta....din baza Link to comment
itzu Posted September 27, 2007 Share Posted September 27, 2007 cum ai constatat ca pare a fi bine comandat buu?dupa ce s-a prajit ai pus bu de care trebuie?daca ar fi cond de recuperare se duce imediat buutrafo linii nu se supra incalzeste in timp ce functioneaza, alea cateva minute?mai uita-te pe circuitul bazei buu-lui la lipituribafta! Link to comment
dosa Posted September 27, 2007 Author Share Posted September 27, 2007 observ ca dupa optocuplor se cam strica semnalul... :smt017 Link to comment
dosa Posted September 27, 2007 Author Share Posted September 27, 2007 nu se incalzeste trafo...ma gandesc la "bobinutza din baza lui bu...dar de unde naiba alta???????? Link to comment
mircea626 Posted September 28, 2007 Share Posted September 28, 2007 intradevar bobina din baza duce la distrugerea tranzistorului.eu am facut strap uneori si nu au fost probleme.oricum bu-ul se incalzeste destul de puternic Link to comment
dosa Posted September 28, 2007 Author Share Posted September 28, 2007 am pus in el bu508af Link to comment
dosa Posted September 28, 2007 Author Share Posted September 28, 2007 am strapat si eu bobinuta si pare ca semnalul pt baza s-a corectat si dupa prox 15 minute inca merge, dar radiatorul e fff cald...(nu am termometru) tensiunea de alimentare e 152v( nu este de unde sa se regleze) :smt006 Link to comment
tv1 Posted September 28, 2007 Share Posted September 28, 2007 150 V e tensiunea nominala de alimentare a etajului B.O. deci nu e o diferenta mare.Tranzistorul original e BU1508AX.Verifica 6108=Zener 7V5 si bobina 5420 ;eventual lipituri reci la pinii modulului,poti suspecta si trafo linii. Link to comment
dosa Posted September 28, 2007 Author Share Posted September 28, 2007 diodda 6108 pare ok, am strapat bobina 5420...dupa 2.30 ore vad ca inca functioneaza chiar cu radiatorul fierbinte :smt006 Link to comment
dosa Posted September 28, 2007 Author Share Posted September 28, 2007 televizor IDIOT :smt070 PHILIPS :toimonster: radiatorul se incalzeste ca dracu mai mult de la celelalte tranzistoare de pe el :snakeman: am pus bu-ul pe un alt radiator, mai sanatos.Radiatorul de la bu, nu pare sa se incalzeasca excesiv, dar vechiul radiator( au ramas celelalte pe el) e TOT FIERBINTE :weedman: Link to comment
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