dc offset no potentiometer 200mv

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
hi guys
i have this amp is a sonido mask 1500.1
is the same board of many amps like memphis, mtx etc...
the problem was the caps blows, and a diode of regulator 5v was damaged.
i replace that and now the amps works good. the rail voltage is fine
but i have 200mv dc offset and the board dont have potentiometer to adjust to zero like the other same boards

any idea?
thanks!
 

Attachments

  • IMG_20171129_105916.jpg
    IMG_20171129_105916.jpg
    1.1 MB · Views: 55
  • IMG_20171129_105926.jpg
    IMG_20171129_105926.jpg
    1 MB · Views: 59
  • IMG_20171129_105947.jpg
    IMG_20171129_105947.jpg
    1 MB · Views: 58
  • IMG_20171129_110001.jpg
    IMG_20171129_110001.jpg
    1,010.6 KB · Views: 53
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.