Jump to content
ELFORUM - Forumul electronistilor
wiley_boss88

cpp330 probleme

Recommended Posts

Asta'i defectul initial , sau dupa remediere a ramas ... asta ?Valoarea masurata , corespunde schemei ?Cu ea scoasa , TOATE tensiunile sunt corecte si stabile in sursa ?Preventiv schimba C811,815,817 intrucat perturbatiile aparute in pinii 8 si 9 IC conduc la intrarea in protectie a IC_ului , implicit a ... TV_ului.

Link to comment
Share on other sites

La tipul asta de sursa trebuie acordata o atentie deosebita pinilor 7-8-9 ai TDA4601. Prin ei sunt "aduse" informatii privind functionarea TV_ului.Depasirea puterii , scurturi in secundar ...Asa ca , daca spui ca ai schimbat toate C_urile din primar , verifica atent toate componentele de pe pinii mentionati si incepe cu R804 a carei valoare este ... critica , apoi , restul.De aceea intrebam de tensiunile din sursa si de pe IC.Iar daca ai un osciloscop , nu te sfii sa'l folosesti.Eu cred ca defectul nu are nicio legatura cu sursa care este intrata in protectie datorita unui consum mare in ... secundar.

Link to comment
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.



×
×
  • 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