Guest illusions2ro Posted October 28, 2007 Share Posted October 28, 2007 Buna la toti !INcerc de cateva zile sa repar acest tv si nu reusesc.E o probleme de sursa ,am schimbat dioda" MUR 160 (dp 080)"si inclusiv toti condensatorii inainte si dupa sursa.Imi intra sursa in protectie ptr ca in loc 105v am 135v .intrebarea ce,am omis sa verific? tv(Thomson tx 807 c-cs)Va mutumesc! Link to comment Share on other sites More sharing options...
baza Posted October 28, 2007 Share Posted October 28, 2007 verifica circ de reactie negativa ( diferentialul tp053, tp054, optocuplorul ). Ai 3,3V stby? ( IP090 )? Ar tb. masurate Usys, reglat rp053 daca a invirtit cineva inainte din semireglabil, verificata comanda opto...sunt toate ok?monteaza sarcina pasiva un rezistor sau bec la iesirea sursei.baza Link to comment Share on other sites More sharing options...
Guest illusions2ro Posted October 28, 2007 Share Posted October 28, 2007 am verificat tot ce mi sa parut suspect :1nF 5% 50V 1 CP027BZX55B16 1 DP021BZX55C7V5 1 DP023BZX55C27 1 DP0271A6T 250V 1 FP001180KΩ 5% 0. 430W 2 RP005-RP0065.1Ω 10% 2.50W 1 RP0081Ω 5% 2.50W 1 RP02010Ω 5% 0.625W 1 RP052STP3NB90FP 1 TP020BC337-40 1 TP022BC856B 1 TP031BC846B 1 TP032si habar nu am ce ar mai putea fii (am tensiunenea de 3v)e la fel sursa intra in protectie iar semireglabilul l-am schimbat pentru ca-i juca cursorul (de linga optocuplor) Link to comment Share on other sites More sharing options...
bigbrother Posted October 30, 2007 Share Posted October 30, 2007 Eu as schimba in primul rand cuplorul optic, apoi cum a spus si baza pune o un bec pe tz. de linii si masoara tensiunile pe diodele zener ca te pot insela, restul spui ca sant ok.Ai grija cu tensiunea de St.by pentru ca daca sursa nu functioneaza bine creste tensiunea periculos, mai bine deconectezi etajele care nu sant necesare de pe choper.Mult noroc :supz: Link to comment Share on other sites More sharing options...
Guest illusions2ro Posted December 17, 2007 Share Posted December 17, 2007 Multumesc ca ai incercat sa ma ajuti ....am cumparat un chit de inlocuirea sursei si merge acum ,Merçi inca odata. Link to comment Share on other sites More sharing options...
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