HOW TO SWAP OUT A TWEETER ON DM601 S2

Review says that the high range tweeter is not up to the job. Click Support and request a new Tweeter and Crossover unit.

https://www.behringer.com/product.html?modelCode=P0379

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In the most general, basic sense, I would be assuming that this is just one speaker and not 2 with this problem, or 3 or more.
Only way to get the ball rolling is pull the tweeter from the cabinet, checking to make sure all wires are connected at the tweeter and inside the speaker.
If that is the case, then you would need to determine if this is the tweeters fault, or its crossover (thing that divides the sound into whats right for the woofer and what the tweeter wants).
If you have a multi-meter, you would disconnect the wires from the tweeter, set the meter to ohms and touch a probe to each speaker terminal. No action means burned out tweeter, 100% action means burned out tweeter, a reading slightly less than the rating on the back of the tweeter (for instance an 8 ohm tweeter would show anywhere from 6 to 8 ohms on the meter) means tweeter is good.
If you have no meter then take the tweeter from the good speaker and swap in place of the bad one, making sure you respect + and - connections.Its a little risky this way,since if there is something wrong in the speaker it may hurt the good tweeter..(the meter is the safer bet). If it works, then you need a replacement tweeter, if not the problem is either wire connections inside the speaker, or something is wrong with the crossover.

If the noise you hear comes from the tweeter or the midrange speakers, it means your amplifier is noisy; if the noise comes from the woofer, then the internal amplifier (it has its own) of the speaker is noisy. If both speakers are noisy, it is most probable that the "static noise" you hear comes from the external amplifier, which you will have to check or change.

I assume you have more than one of these speakers. If so simply remove the tweeters from the two speakers and swap them around. If the other speaker acts up then, you know the tweeter is faulty. However if it stays on the same speaker it's the crossover that's the problem.

If it's removable then you can probably swap it out of another speaker, or find the specs (stamped on the back of the tweeter) and swap it with one that is compatible in ohms and size, wattage etc. maybe look at www.parts-express.com to start. It's probably not worth repairing in a shop unless it is under warranty still.

Swap the speaker with the other one to prove the source is NOT the problem and then get the tweeter fixed.

Some available on eBay for $45 free shipping.

http://cgi.ebay.com/JBL-Tweeter-Diaphragm-EON15-G2-EON15P-1-230-Speaker-/160544013218?pt=LH_DefaultDomain_0&hash=item25612b3ba2

It sounds like a ground problem with the speaker crossover circuit or the amplifier. Turn the amp off and disconnect one speaker and interchange it with the other using the same speaker wires. If the static speaker is now working interchange the speaker wires and try it again. Or if the same speaker still has static it is the speaker. If the static is on the same channel then you have a bad wire or if both channels work it was a bad connection. If the problem remains on the same channel change the speaker wires. If the problem switched to the other channel then it is a bad speaker wire or connection. If the same speaker has the same problem it is most likely the crossover circuit in the speaker which is used to filter frequencies of the audio signal by using capacitors and coils. If the static speaker is now working and the other speaker is now not working it is the amplifier. If the static problem is on all input devices I would trouble shoot the preamp section of the amplifier.

At first I thought your screen went black during the start up process. After seeing the bios screen. In which case I would've said it was a bios setting for the display. Then I realized that I think you mean that their is no display at all. When you push the power button. Only the monitor led light. So, it may be a problem with your RAM stick/s. You should make sure that they are properly seated in the mother board. If they are new, make sure they are compatible with that motherboard. If you can you should swap them out with known good ram sticks. You could also try installing a video card and see if you can get display to work through that one. Make sure your main power supply wire connector is pushed in all the way. Swap the power supply with a known good one if you can. If still can't get it to work you may want to take the motherboard out and inspect it for burns, cracks, and anything that doesn't look right. Maybe contact the manufacturer of the motherboard and ask them what you can check. hope this helps.

At this point, you might just want to look at it again and worst case senereo, you mess up the face of the speaker to get inside, Since it does not work, and its not one of those speakers that you normally send out to fix. It is a throw away item. This is why they don't want to deal with you. Cheap speakers are anything under 300, and usually cost more to send out.