B1200 Pro Behringer active subwoofer

SOURCE: No lights in the touchpad when slide up

its probably the sensors inside your phone. most manufacturer uses magnet or sensing... if you can open your phone check if its still in place... if not visit your service center...

SOURCE: Subwoofer just stopped working. There's power but no sound.

I have the same problem. My guess is that the subwoofer coil is messed up. You MIGHT have to get it recoiled. But before you do any of that get someone with a sub to play their sub in your car, if it works.... then your sub is messed up, if not.....then your amp is messed up ( trial and error ). Today i noticed my subs rubber surrounding is crooked, that may be the problem for me. Also when I press down on the sub it makes a sticking sound, like something came loose. So once i get everything opened and out ill let you all know the solution. Good Luck!

SOURCE: compaq presario 2500 battery calibration

Try resetting the bios. There should be a hole on the underside of the laptop with letters reading "RESET" in white text.

Stick a toothpick in there and hold it for a few seconds and then try booting up again

SOURCE: activity limit exceeded

Thats because the primavera program that you are using is a old version or it is a educational version. Update it to P-3.1 and then give it a try again.

SOURCE: We have the jbl eon

First thing is to use an ohmmeter to check the voice coil of the speaker to make sure it is not blown open. After that it is into the shop for amplifier repair.