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ELFORUM - Forumul electronistilor
george2014

Denver led tv

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buna ziua.

aceasta chinezarie are placa T.MSD309.3D 11112

vezi aici:http://www.ebay.co.uk/itm/T-MSD309-3D-11112-MAIN-AV-BOARD-FOR-BLUE-DIAMOND-BD16L-16-HD-LED-TV-/231488275963

Porneste aleatoriu iar uneori butonul on/off nu mai are efect (tv-ul nu se mai poate inchide decat scos din priza)
La o noua conectare ledul este rosu,on/off actioneaza dar tv nu se aprinde.
Toate tensiunile sant corecte in afara de comanda BL_on/off care lipseste (normal=3,5-4v pe on)
Comanda se face pe baza unui tranzistor (H=off,L=on) din procesor,probabil msd309.
Ce poate fi defect??? memorie alterata,procesor???
Poate cineva are si o schema cu aceasta placa
 
   mutumesc anticipat pt. ajutor
 
          Geo
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Dacă e vorba de acel TV care a primit o tensiune mare (220V rezidual prin condensatorii de antiparazitare) pe mufa AV sau Peritel de la un receptor satelit...  http://www.elforum.info/topic/102816-caut-schema-led-tv-denver/?do=findComment&comment=1162847 atunci veți fi norocos să aveți doar memoria Flash afectată. De obicei este afectat și controlerul plăcii...

Scrierea memoriei implică un programator de memorii...http://www.dtforum.info/index.php?PHPSESSID=0027255edecc19c3c068b5d2c1634cd7&action=dlattach;topic=137204.0;attach=268650950;image   și un soft adecvat programatorului (ex. PonyProg)

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