Jump to content
ELFORUM - Forumul electronistilor

tv Westwood sasiu P1470A03


Recommended Posts

salutare!

 

am pe masa tv-ul din titlu , cu urm simptom:

la conectarea la retea , da sa porneasca de trei ori (se aude si releul pus pe demagnetizare de trei ori aclansand) , si ramane oprit.

se aude ca pleaca si inalta de trei ori (fractiuni de secunda)

am schimbat optocuplor, tranzistorul care face 5 volti (V502), trafo linii, rescris memorie

pe bec , sursa se comporta la fel: se aprinde si se stinge becul de trei ori ramanand stins

daca decuplez becul (sursa in aer pe B+) , tensiunile sunt normale in secundar : 110 , 25, 12 , 14 volti

mai are cineva vreo idee?

schema exista?

thx!

Link to comment
  • Replies 13
  • Created
  • Last Reply

Top Posters In This Topic

  • 2 weeks later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



×
×
  • 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