T7900 Speakers cutting out at high volume

Help! I'm having a Party tomorrow and everytime I turned my speakers higher than about 50% they cut out, so that the volume drops until the next beat hits, then it cuts out again. I am using the original power supply, and I am sure that the connections are ok because the problem started recently.
I did have a problem with the pendant that has the volume and bass control on it, in that there was a bad connection when tyou turned the volume dial so that it crackled and the green light dimmed, but that cleared after a little use. The green light stays on with the current fault.
I am using onboard sound (AC97) on my MSI 875P Neo motherboard, and i haven't altered the drivers since before it worked.
I'm running out of time before we kick off tomorrow so any help you can offer please post.
Otherwise its going to be a very quiet party
also i don't know why there are no paragraphs when i preview this post. Go figure

Hello guys, I faced a similar problem with the t7900...
when I turn up the volume from my pc... without touching anything else the speakers begins to power off and then back on,, and one time i found it powering off and on again without playing any music, that terrifed me to death.. as I was sleeping. and at last I began to check wires and just move it and I found it doing the same thing.. I found that the fuse that is located at the end of the adapter cable( the thick part located before the jack that is connected to the subw.) is not properly connected to the wire that doesn't permit high power to pass through it that is needed for high volumes so it begins to poweroff. I fixed it's and the problem never repeated again.. Hoping this to help you.

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