mercenarx Posted September 27, 2016 Share Posted September 27, 2016 salutare ! http://elektrotanya.com/vestel_17ips19-5p.pdf/download.html am tv-ul din titlu , cu sursa + inverter led 17IPS19-5 , cu urmatorul simptom: la alimentarea de la retea , licare de 7 ori ledul de st-by , apoi ramane stins si apare sonorul , iar display-ul are o scurta licarire. pe display-ul iluminat lateral, se observa imaginea , schimba posturi , face tot. pe cupla P501 (iesire inverter) am pentru scurt timp 44 volti , imediat incepand sa scada , ajungand la 0 am facut motajul pt verificarea ledurilor propus de userul ledydep , si ledurile se aprind., dar acesta neavand o limitare de curent , este posibil sa aprinda si o bareta de leduri defecta (led in scurt sau intrerupt) este prima oara cand am modelul asta , si nu as vrea sa desfac panelul degeaba. sa fie vre-un led defect? thx! Quote Link to comment Share on other sites More sharing options...
Giorgian tv Posted September 28, 2016 Share Posted September 28, 2016 salutare ! http://elektrotanya.com/vestel_17ips19-5p.pdf/download.html am tv-ul din titlu , cu sursa + inverter led 17IPS19-5 , cu urmatorul simptom: la alimentarea de la retea , licare de 7 ori ledul de st-by , apoi ramane stins si apare sonorul , iar display-ul are o scurta licarire. pe display-ul iluminat lateral, se observa imaginea , schimba posturi , face tot. pe cupla P501 (iesire inverter) am pentru scurt timp 44 volti , imediat incepand sa scada , ajungand la 0 am facut motajul pt verificarea ledurilor propus de userul ledydep , si ledurile se aprind., dar acesta neavand o limitare de curent , este posibil sa aprinda si o bareta de leduri defecta (led in scurt sau intrerupt) este prima oara cand am modelul asta , si nu as vrea sa desfac panelul degeaba. sa fie vre-un led defect? thx! Acea tensiune de 44v vine din sursa,tv-urile LED nu au invertor,schimbati conzii electrolitici din sursa,in prima faza. Quote Link to comment Share on other sites More sharing options...
Giorgian tv Posted September 28, 2016 Share Posted September 28, 2016 Si este dictata de un controler Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 28, 2016 Share Posted September 28, 2016 Desfa din circuit pinul de reglaj intensitate care vine la sursa din MB si vezi ce face. Quote Link to comment Share on other sites More sharing options...
mercenarx Posted September 28, 2016 Author Share Posted September 28, 2016 Acea tensiune de 44v vine din sursa,tv-urile LED nu au invertor,schimbati conzii electrolitici din sursa,in prima faza. da , driver led (am vazut ca unii il numesc inverter led) , in fine , se intelege despre ce vorbesc si , dane care ar fi pinul ala de dimming? (totul este pe o singura placa) Quote Link to comment Share on other sites More sharing options...
mercenarx Posted September 28, 2016 Author Share Posted September 28, 2016 (edited) cred ca este vorba de pinul 3 IC 500 (MP3394) sau pin 13 mufa PL200, corect? Edited September 28, 2016 by mercenarx Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 28, 2016 Share Posted September 28, 2016 Dimming (dimineata am avut un laspus cu termenul asta)care vine de la MB parca in mufa lui pin 4 daca tin bine minte.Se pote desface direct strapul sau ce are acolo pe placa sursa/invertor. Quote Link to comment Share on other sites More sharing options...
mercenarx Posted September 28, 2016 Author Share Posted September 28, 2016 (edited) este corect ce am scris mai sus? am intrerupt dimming-ul din MB si face la fel (pin 13 PL200) Edited September 28, 2016 by mercenarx Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 28, 2016 Share Posted September 28, 2016 Atunci mari sanse ca MPul ala sa fie defect. Quote Link to comment Share on other sites More sharing options...
mercenarx Posted September 28, 2016 Author Share Posted September 28, 2016 (edited) led-urile sa fie ok? nu stiu cate barete de leduri are display-ul asta , dar banuiesc ca 2 am conectat testerul de leduri cu tv pornit , si apare imaginea corect , doar ca parca putin intunecata (evident ca dimming este la minim , fiind anulat) display-ul este VES315WNDL-01 din ce se vede aici cred ca este vb de 2 barete a cate 11 leduri https://www.piese-servicelcd.ro/www-piese-servicelcd-ro/eshop/13-1-LED-Strips-4-Backlight-Repair/0/5/2016-VES315WNDL-01-VES315WNDA-01-LED-STRIPS Edited September 28, 2016 by mercenarx Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 28, 2016 Share Posted September 28, 2016 Am avut nu demult asa ceva si a fost CIul defect/Asa ceva trebuie tinut pe stoc. Quote Link to comment Share on other sites More sharing options...
mercenarx Posted September 28, 2016 Author Share Posted September 28, 2016 (edited) ok , fac comanda la Miva , dar mai am o intrebare : cum verific led-urile daca sunt sigur ok (la lampi e mai simplu...)? Edited September 28, 2016 by mercenarx Quote Link to comment Share on other sites More sharing options...
dan cod Posted September 28, 2016 Share Posted September 28, 2016 Cu testerul de leduri(binenteles cu panelul desfacut) Quote Link to comment Share on other sites More sharing options...
mercenarx Posted September 28, 2016 Author Share Posted September 28, 2016 prima data am sa schimb controlerul led, apoi mai vad . revin Quote Link to comment Share on other sites More sharing options...
mercenarx Posted September 28, 2016 Author Share Posted September 28, 2016 (edited) stie cineva o sursa de incredere pentru MP3394 (la miva este epuizat)? ce tensiune trebuie sa fie in pin 2 la MP (bl-on sa fie enable) ? thx! Edited September 28, 2016 by mercenarx Quote Link to comment Share on other sites More sharing options...
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