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Kytan666

tv LCD LG 32LG3000

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am un tv lg 32LG3000 care am venit cu defect : porneste dupa 10-15 min (se incalzeste) si dupa merge perfect , schimbat cond sursa , si refacut lipituri sursa . acum porneste din prima dar acel dreptunghi pe care afiseaza "lipsa semnal" tremura , se mareste , joaca haotic, face dungulite ... ce asi putea sa-i fac . nu am intalnit defectul pana acumrevin cu update , pe masura ce se incalzeste incepe sa-si revina , acum aproape ca afiseaza normal

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sunt 4 condensatori pe mainboard deasupra la mufa de hdmi daca imi aduc bine aminte...

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am schimbat 4 cond , pentru cateva minute parea sa-si fi revenitdar tot asa face, am auzit un bazait neuniform pe placa ldvs de pe panou, o bobina F6R8 , inainte de ea am 5V dupa ea am 10V, caut acum o schema la el ..

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mersi de schema , o gasisem si eu intre timp , buba e ca totul e ok , 3,3 .... 4.9 ... 1,24 ....2,51... 1,8 ... pe placa t-com am 15,70....4.93...6.66 ...nu stiu ce-i cu 16 si 6,6 pe acolo ...in schema tv-ului , partea t-con lipseste .

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T-con sharp 81D23969TPCPWBXRUNTKin afara de procesor care frige nu am gasit nimic fierbinte iar pe t-con n prea am cum verifica fiind tinuta de o placa de tabla plus un profil metalic si nu pot baga mana dar nu pare sa fie ceva fierbinte pe acolo

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am masurat tensiunile cu el rece facand figuri , sunt identice cu cele masurate cu el incalzit cand merge ok ... am ramas fara idei .... :nebunrau:

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Incercati asta:Affected Models42LG3000, 42LG5010, 42LG7000SymptomNo PowerCauseAC OVP faultSolutionremove ZD111, ZD112, C108 on power supplySource: LG SERVICE BULLETIN 0IVL20100873Se aplica si la 32lg3000Am facut-o de mai multe ori si mergeDaca tot nu merge, o alta sursa a problemei pot fi condensatoarele de 100uF/16v smd, pe place de baza care sunt montate pe intrarile si iesirile integratelor stabilizatoare de tensiune. La modelele mai vechi de lg: LF65 si LC46 am inlocuit multe.

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