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TV LG CF-20F66X defect


Guest ovidel_mm
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Guest ovidel_mm

Salutare, 

de 13 ani am la tara (unde mergem in week-end)un televizor  LG CF-20F66X  care saptamana trecuta s-a defectat.  In momentul in care il pornesc se aude tic-tic si nu se aprinde led-ul de stand-by. Poate cineva sa ma indrume sa-i gasesc defectul, va rog?

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tic tic tic...defect clasic....de verificat tranzistorul final condensatorul aflat pe colector emitor al acestui tranzistor....si traful final posibil strapuns...asta e ultima varianta

probabil a fost un soc electric la pornire si cond de care spuneam s-a scurcirciutat sau intrerupt....tz final posibil sa fi cedat si el depinde de cat a stat in priza in sarcina.....

spor si bafta

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Guest ovidel_mm

nu mai am scurt. deci trebuie inlocuit tranzistorul.

1. Ce cauze ar fi putut duce la arderea lui? ca sa verificam inainte sa se arda cel nou

2. de unde pot sa cumpar tranzistorul?

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Eu zic ca,aici,cauza defectarii este C401(2,2mf/50v).Il puteti pune mai mare (4,7mf,10mf/50v sau 63v) succes.Puneti un bec de 75-100w/24v intre C-E Q402,porniti tv-ul si vedeti daca tensiunile in secundarul sursei sunt bune.

Edited by cristybadea
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Eu zic ca,aici,cauza defectarii este C401(2,2mf/50v).Il puteti pune mai mare (4,7mf,10mf/50v sau 63v) succes.Puneti un bec de 75-100w/24v intre C-E Q402,porniti tv-ul si vedeti daca tensiunile in secundarul sursei sunt bune.

O editare la 75-100w/24v

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