Jump to content
ELFORUM - Forumul Electronistilor
Sign in to follow this  
player4

Depanare amplificator ax-1090

Recommended Posts

Yamaha ax-1090..

Dupa inlocuirea integratului responsabil cu reglarea biasului (HCA  BA3122n) si a finalilor pe ambele canale, am ajuns la punerea in functiune..

Biasul se regleaza din poturi, insa am urmatoarea problema:

 

1. Biasul pe canalul stang imi sare cu 4mv pe rez de 0.22, atunci cand actionez pe ON oricare din comutatoarele releelor Speaker A , Speaker B.

Cand decuplez releele imi scade inapoi..

Finali, prefinali ok, masurati in tensiune.

Integratele de bias sunt ok, masurate si intensiune.

Releele si sursele acestora ok, masurate si in tensiune.

 

Are cineva vreo idee despre ce as mai putea verifica?

 

http://elektrotanya.com/yamaha_ax-1090.pdf/download.html

 

Multumesc Anticipat.

Edited by player4

Share this post


Link to post
Share on other sites

in etajul final sigur nu e nimic, ca am verificat fara preamplificare si functioneaza perfect... Figura o face doar daca las jumperii pre-out>>>main-in, indiferent daca e activata functia de by-passare a corectorului de ton 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.