Jump to content
ELFORUM - Forumul Electronistilor
Sign in to follow this  
mariantoader82

Grundig P40 -242 CTI

Recommended Posts

Va salut si ,,La multi ani '' !

 Sasiu cuc 2401 am gasit finalul linii ars si mai multi condensatori devalorizati si cei de pe ci driver tda 8140  pe care l-am schimbat de trei ori din recuperari.

Cu finalul linii pus pe colector nu am tensiune alternativa ,pe bec sunt 80v ,B+ e 2,5v si mai sunt 12v prezenti si la alimentarea tda 8140.

Rog frumos sa ma ajutati !

Share this post


Link to post
Share on other sites

Asta-i varianta cu TDA3640 in alimentare,si triplor verde-vertical.Trebuie schimbati toti electroliticii de langa TDA3640,in special 10uF/400V.Trebuie verificata continuitatea infasurarilor trafo.linii(cu rol si de chopper),care au prostul obicei de a se intrerupe.HR5707TDA8140,produce de obicei arderea finalului,spuneti ca l-ati inlocuit.

    Uite ca am gasit si schema:

    Si minunea de traf:

Edited by Andrei Tabacaru

Share this post


Link to post
Share on other sites

Am verificat toti condensatorii electrolitici  si infasurarile de la transformatorul de linii sunt in regula ,urmeaza sa schimb Tda 2579.

Share this post


Link to post
Share on other sites

    Inainte de a schimba TDA2579,trebuie verificat daca la pin 10 primeste alimentare,si la pin  11 apar impulsurile H.out.

Share this post


Link to post
Share on other sites

Condensatorii si rezistentele din sursa sunt in regula ,acest sasiu are  TDA 2595 si in pin 15  sunt 8v.

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.