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mixer feeding back / buzzing

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Dr_Hysteric +

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mixer feeding back / buzzing
sorry if this has already been answered elsewhere...

I have an old Vestax 2 channel mixer which has served me well for many years.
It's suddenly developed an annoying buzz and I can't for the life of me figure out the reason.

Tried the obvious (ie unplug everything and reconnect) but without success.
Everything seems to be grounded.

This has happened before but eventually disappeared (?)

After 10 years probably time for a new mixer, but in the meantime any suggestions?
Thanks!
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Did you move it? I've found i've created ground loops by plugging certain combinations of things into powerboards/power points. It might be as simple as plugging the mixer into a different power point. Or plugging one of your CDJ's into a diff powerboard. If the buzzing goes away when you unplug your RCA cables then this would be my bet. Experiment with the speakers too. Anything in the chain could be the cause. Just move some power cables around and it might go away.
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I had the same prob, eventually realised it was the RCA connecting one of the turnies which was causing it.
After 10 years using a mixer, prob worth getting it serviced anyway.
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I have a similar problem with my ST-150s, minor buzz/feedback noise. Luckily it's minor enough that I can play at home and it's not noticeable unless I crank it. Pretty sure I've pinpointed issue to the built in ground...need to get em serviced.

I took my turnies to a gig last month and plugged it into a big rig, the buzzing was insane. Luckily managed to get someone to bring down their Technics!
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Dr_Hysteric +

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thanks for the replies, gonna try a new powerboard and RCAs
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strange thing:
the mixer works totally fine during the day, but feeds back and buzzes so much that it's unusable at night.

btw tried different RCAs and powerboard with no effect.
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Quote:

Originally Posted by Dr_Hysteric View Post

strange thing:
the mixer works totally fine during the day, but feeds back and buzzes so much that it's unusable at night.

btw tried different RCAs and powerboard with no effect.

I think this has to do with the electricity load on the power grid causing some kind of interference. during the day when most people are at work you get cleaner power than at night when everyone is home. not sure why it is affecting your mixer though. maybe look into some sort of power filter. or i could be completely wrong!
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thanks for your replies, going to experiment with it a bit - or finally just buy a new mixer.
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