M-Audio BX5a Deluxe No Pwr On, repaired!

[Edzone]

Hi guys new here, with so much pleasure I wants to share with all of you this BX5a Deluxe issue although I don't have the schematics or service manual. It does not pwr on, then opened to check in and discovered the F2 (2A/250V) blown fuse, follows checking and founds another culprit the U2 (L7912ACV from ST) voltage regulator IC in short. Because there are no more bad components, I has tested again to power on and OK!, ready!. Voltages ok, sound with tweeter and woofer ok (sounds Good!). Then I has also goes to checked the 2 pwr supply large caps issues but it's right with this speaker. Three month since that repair and is working perfect.
Thanks!Edu.

[Chuck H]

Edzone,
Welcom to the forum. It's great to share your repairs. It is good information for anyone with similar problems on similar amps. I can tell that english isn't your first language. If you include where you are in your profile you may find ohers here that are in or from the same country. You seem to be good at finding problems so it's good to have you here.