augustin Posted July 26, 2019 Share Posted July 26, 2019 (edited) Sanatate ! Tv-ul sa defectat in urma unui soc electric .. Am gasit defect in sursa in secundar : dioda redresoare de pe bara de 12V .. si Tl431 care era in scurt... Dupa inlocuirea lor tensiunile secundare sunt prezente , ledul de stand-by este rosu , dar tv nu pleaca din stand -By .. In secundar am tensiunea de 5V stby si celelalte doua de 5V si 12V le am pe diodele redresoare pana la mosfeti ... Sursa este : AY065D-3HF01 .. Si Main : JUG7.820.1283 As avea nevoie si de schema sursei daca se poate ! Multumesc ! Dupa mai multe sapaturi , am observat ca in secundar mai am o dioda redresoare pe care am o tensiune de 33v care vine la o dioda zelner printr-o rezistenta de 510R . am masurat dioda si este defecta .. Din pacate este SMD si nu vad ce scrie pe ea . pe placa are notatia ZD1 .. Edited July 26, 2019 by augustin Quote Link to comment Share on other sites More sharing options...
yokoono Posted July 26, 2019 Share Posted July 26, 2019 Dupa cum spuneti dioda ar trebui sa fie de 33v si tensiunea o foloseste selectorul. Quote Link to comment Share on other sites More sharing options...
augustin Posted July 26, 2019 Author Share Posted July 26, 2019 Am pus o dioda de 33 .. tv functioneaza ... Multumesc ! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.