Jump to content
ELFORUM - Forumul Electronistilor
Sign in to follow this  
ciuca paul

samsung cz-21m063n

Recommended Posts

Va salut. Sasiul tip=T444S porneste ptr.un moment cu aparitia inaltei si tensiuni recuperate si se opreste imediat (2secunde) ,aparent tensiuni corecte ,pus memorie ff dar se comporta la fel.Am verificat ceva scurt,dar nimic deosebit.Rog ceva sugestii si schema intrucat nu am gasit-o pe netiar acolo unde s-ar putea, intervine antivirusul..

Share this post


Link to post
Share on other sites

verifica intre pini trafo linii daca este sasiul KS9A

daca este acest sasiu schimba CR409S CR404S CR405S din colector bu si va porni succes

Share this post


Link to post
Share on other sites

Componente ce echip. sas. sursa 5q0765rt, multif.tda9351ps/n2/31308, cond.numerotate corespund si sunt ok,am precizat ca am inalta,iar daca erau cu probleme nu mai aveam inalta si intervenea protectia deci sasiul nu este acesta....

Share this post


Link to post
Share on other sites

daca are conzi tip plachete pe colectoru bu schimbai fara sai masori chiar daca dau bine la masuratoare ca in tensiune intra in scurt si opreste inalta 

Share this post


Link to post
Share on other sites

D-nu Florin cr404s desii masurat atat ohmetric cat si pe capacimetru era ok in montaj aveti dreptate nu mai era.Prin acest Condens se preiau inpulsuri din colectorul fin linii ,totusi nu inteleg care este fenomenu? poate primesc ceva explicatii despre strapungerea in inpulsuri de tensiuni mari a acestor condensatore..

Share this post


Link to post
Share on other sites

    Fenomenul este foarte clar:strapungerea are loc in functionare,cand pe colectorul finalului linii(adica tranzistor),se afla impulsuri pozitive,axate pe B+,cu amplitudinea de aproximativ 1200Vvv.Ori capacimetrul/multimetrul/ohmetrul au baterie de 9V.................

Share this post


Link to post
Share on other sites

si vizibil pe afara arata bine dar in interior arata ars strapons el intra in scurt la tensiuni mari 

Share this post


Link to post
Share on other sites

nu-mi amintesc cand am mai gasit  ultima oara asemenea fenomen ,inteleg oarecum problema dar in afara solutiei practice de substituire intreb,s-a inventat un aparat  sau o solutie de depistare a acestor fenomene? ,acest condens. se strapunge in impulsuri v v si nu in tensiune nu? gresesc cumva? 

Share this post


Link to post
Share on other sites

Eu am tester pentru verificarea tensiunii de strapungere la conzi,diode,tranzistori...Cu aparatul ala lamuresc repede daca e bun sau nu

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.