Jump to content
ELFORUM - Forumul electronistilor
Sign in to follow this  
chanito

philips L01.2e

Recommended Posts

salutare stimabililoracest tv a intrat cu sursa defecta(o dioda din punte),sursa de 3,3v,si o diooda zenner de 9v care iesea din octocuplor,defecte.schimbat toate patru;B+ este 123v,am si 9v daca las iesirea din sursa de 3,3v in aer.daca o cuplez imi cade tensiunea de 9v la 2-3v,si implicit nu am cei 3,3v pt.proc.ledul nu de aprinde.m-am uitat si pe schema dar nu-mi dau seama ce consuma.caderea este destul de mare,dar nu se incalzeste nimic.o sugestie ar fi binevenita.

Share this post


Link to post
Share on other sites

3,3V alimenteaza procesorul! A fost traznit cumva? Decupleaza alimentarea la procesor si vezi daca mai scade tensiunea!

Share this post


Link to post
Share on other sites

care frate .ca are nenumarate alimentari de 3,3v.oricum la sursacare am schimbat-o daca ii lads out in aer imi scoate 3,3.dar conform schemei,mai alimenteaza si altceva,si in aloc de 12v cat ar trebui sa fie pe bara de alimentare a sursei am doar 9v.am incercat cu o sursa de 12v externa sa-l fortez dar ,desi tensiunea nu mai cade,tot nu misca nimic.ledul clipeste daca ii dau din remote.daca e proc sse poate arunca la gunoi.mai sap ,dar sugestiile sunt binevenite.

Share this post


Link to post
Share on other sites

Vedeti ca si memoria este alimentata tot cu 3,3v. Scoateti memoria si vedeti daca pe pin 8 al memoriei sant 3,3v. Daca nu sant, atunci decuplati cei 3 pini(59-61-66) care alimeteaza procesorul, pe rand cate unul, pana ce tensiunea de 3,3v va fi corecta , daca nu, procesor defect!

Share this post


Link to post
Share on other sites

intradevar,pini 59-61 decuplati,apare 3,3.deci clar proc defect.multumesc dl.mares

Share this post


Link to post
Share on other sites

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.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.Terms of Use si Guidelines