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aygun

Modificare Backlight TV Telefunken - aka Vestel

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Astazi imi pica pe mina una bucata TV LED Telefunken T32TX189DLBP. Driver LED-uri varza si ciorba de varza , LED-urile pocnite precum floricelele si am facut una bucata "pozna" am grupat LED-urile cate trei iar ele defecte , dupa cum se vede in poze , inlocuite cu unele de 0.5W puse in paralel, adica undeva de 1W per LED si cu lupa. Rezultatul se vede tot in poze. Drivere utilizate , aceleasi PT4115. ;)

 

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Si vine si partea a doua a imaginilor .Pffffff , limitari la link-uri de pe postimg.org

 


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Pff ,am acelasi tv cred.Eu am inlocuit doar 2, de 2w dar mi-a facut pata de lumina in zona respectiva  :tryre. Daca as fi pus peste reflectorul lor,prins cumva acolo,probabil ca ar fi fost redus efectul..

Poate ai masurat sa vezi ce putere are ledul original? Ca am ratat.

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Nu ammasurat nimic. Am pus ce am avut in ograda iar peste ele am pus , in loc de diffuser , o foicica de hartie.

Dupa cum vezi iluminat uniform .

Uneori trebuie sa stii sa pacalesti anumite chestii fara giumbuslucurile lor.

Dupa cum vezi in imagini iluminatul este uniform si am avut de schimbat 6 LED-uri dar am mai pus inca doua perechi sa pot face grupe de cate trei pentru a le alimenta prin PT4115. 

ON /OFF-ul pentru modul il iau din ceva semnal de 5Volti ce este pe logica ;)

 

In rest numai de bine.

 

 

PS: Pina acum ,  cred ca este cel mai cretin backlight vazut in TV-uri LED.

 

Am ras cand am vazut ciupercutele ale de nu se poate.

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