Karaoke Scene's Karaoke Forums :: Yamaha MG166CX mixer problem

Hi everyone.
Was wondering if anyone has worked on this mixer. I had a faulty karaoke disc which has 'blew' the Right side on the STERIO OUT and now i have nothing coming out of this channel. If it is something as simple as being fuse protected or similar i'm pretty sure i could fix this myself.
I was setting up for a show and played a couple of songs on various discs with no problems then put another disc in and there was a horrendous noise coming from the speakers, very loud! I am an electronics tech by trade and have traced the fault down to the right stereo out on the mixer as i said earlier.
I still managed to run the show by using the LEFT sterio out to one channel on my QSC GX5 amp and then onto 2 passive speakers on channel 1, but i'm presuming now i was only running in mono. Anyway, it still sounded fairly decent.
I bought it on E-Bay from the states and have just read the warranty which is void 'cos i live in Canada.
Any ideas would be greatly appreciated, thanks, Mick.

Author:	toonarmyrule [ Mon Nov 09, 2009 10:12 pm ]
Post subject:	Yamaha MG166CX mixer problem
Hi everyone. Was wondering if anyone has worked on this mixer. I had a faulty karaoke disc which has 'blew' the Right side on the STERIO OUT and now i have nothing coming out of this channel. If it is something as simple as being fuse protected or similar i'm pretty sure i could fix this myself. I was setting up for a show and played a couple of songs on various discs with no problems then put another disc in and there was a horrendous noise coming from the speakers, very loud! I am an electronics tech by trade and have traced the fault down to the right stereo out on the mixer as i said earlier. I still managed to run the show by using the LEFT sterio out to one channel on my QSC GX5 amp and then onto 2 passive speakers on channel 1, but i'm presuming now i was only running in mono. Anyway, it still sounded fairly decent. I bought it on E-Bay from the states and have just read the warranty which is void 'cos i live in Canada. Any ideas would be greatly appreciated, thanks, Mick.

Author:	MorganLeFey [ Tue Nov 10, 2009 1:11 am ]
Post subject:	Re: Yamaha MG166CX mixer problem
I use the same mixer but havent experienced probs with it, sorry to hear you have.

Author:	Lonman [ Tue Nov 10, 2009 1:27 am ]
Post subject:	Re: Yamaha MG166CX mixer problem
toonarmyrule @ Mon Nov 09, 2009 11:12 pm wrote: Hi everyone. Was wondering if anyone has worked on this mixer. I had a faulty karaoke disc which has 'blew' the Right side on the STERIO OUT and now i have nothing coming out of this channel. If it is something as simple as being fuse protected or similar i'm pretty sure i could fix this myself. I was setting up for a show and played a couple of songs on various discs with no problems then put another disc in and there was a horrendous noise coming from the speakers, very loud! I am an electronics tech by trade and have traced the fault down to the right stereo out on the mixer as i said earlier. I still managed to run the show by using the LEFT sterio out to one channel on my QSC GX5 amp and then onto 2 passive speakers on channel 1, but i'm presuming now i was only running in mono. Anyway, it still sounded fairly decent. I bought it on E-Bay from the states and have just read the warranty which is void 'cos i live in Canada. Any ideas would be greatly appreciated, thanks, Mick. It's not a fuse since it is powering up and playing at all. Sound like you could have blown a channel which would require servicing, however I don't believe a faulty disc would cause that problem - it would more than likely be because of too high of volume levels or the gain structure was set way too high that blew the channel. Does that output not produce any sound at all or just no music?

Author:	mckyj57 [ Tue Nov 10, 2009 7:44 am ]
Post subject:	Re: Yamaha MG166CX mixer problem
We should trade -- all I use is the left channel, as I run mono by choice. I would just run mono, myself. In most places it is the right thing to do.

Author:	toonarmyrule [ Tue Nov 10, 2009 8:07 am ]
Post subject:	Re: Yamaha MG166CX mixer problem
Thanks for your replies guys. The volume levels were set as normal and as i said earlier, i had played a couple songs no problems. I hadn't touched any gain or level controls when this happened. I just loaded the disc like normal and it all went pear shaped (sorry, my way of saying 'terribly wrong'). I think somehow the disc may have loaded a bit skew-whiff and it caused an anomily,just thinking out loud, don't really know for sure! Anyway, Mcky has brought up another question I should ask. When I ran the show just off the one channel, it sounded fairly reasonable, not much different to using both left and right. So my question is, what is the big deal in running sterio if Mcky thinks Mono 'is the right thing to do in most situations anyway'! I will get the mixer fixed eventually i'm sure! Thanks agian, Mick.

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Author:	letitrip [ Tue Nov 10, 2009 8:45 am ]
Post subject:	Re: Yamaha MG166CX mixer problem
Running in Mono wouldn't be the end of the world and would sound OK. The only place you may lose some stereo imaging is in the music tracks and reverb. However, as long as it's "all there" in the mix, few people are really going to notice the difference.

Author:	mckyj57 [ Tue Nov 10, 2009 8:59 am ]
Post subject:	Re: Yamaha MG166CX mixer problem
letitrip @ Tue Nov 10, 2009 11:45 am wrote: Running in Mono wouldn't be the end of the world and would sound OK. The only place you may lose some stereo imaging is in the music tracks and reverb. However, as long as it's "all there" in the mix, few people are really going to notice the difference. In most small bars, the "sweet spot" where stereo can be appreciated is pretty small. I have seen people try to bounce speakers off the wall to increase the area, and that seems to work in some cases. If you can place your speakers such that stereo can be appreciated by the majority of the audience, that is nice. But I would argue it isn't typical.

Author:	evm3 [ Wed Nov 11, 2009 2:28 pm ]
Post subject:	Re: Yamaha MG166CX mixer problem
Like Lonman said... one of the top list culprit are gain setups, I guess you ran that channel too hot.

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