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G90 Noise, Maybe Dead Receiver?


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#1 joeydego

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Posted 20 April 2014 - 01:02 PM

Last gig, my 2 year old flawless G90 was putting out some funky noise. Here's a detailed synapsis. Line6 G90>TC Electric Gsystem 4CM to triple rec. with no transmitter powered on, no niose. With wireless unit removed from the signal chain and guitar>cable>G system input, no niose. As soon as I powered up a transmitter, high pitched noise and input to the G System was on fire. Switching out transmitters proved same probem. Any help? Sounds like a beat rackmounted receiver.


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#2 joeydego

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Posted 20 April 2014 - 01:19 PM

niose = noise for the dyslexic :)


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#3 dboomer

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Posted 20 April 2014 - 02:21 PM

When you power the transmitter on and hear the noise is any cable plugged into it?

Plug a cable in and short the tip and sleeve on the open end (wrap some tin foil around them). Do you hear the noise now?

#4 joeydego

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Posted 20 April 2014 - 02:56 PM

The noise happened both with and without cable connected to the transmitter. It also happened with 2 different transmitters and cables. I'm not in the same state as the rig right now to test but I will try that.
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#5 dboomer

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Posted 20 April 2014 - 04:03 PM

It would seem that the receiver would be suspect but we should rule out a couple of other things first.

Try the shorted cable

Are the g90, TC and amp all plugged into the same power strip? They should be for best performance.

What firmware versions are the Tx's and receiver. If not the newest it certainly wouldn't hurt to get them upgraded.

Does the problem continue or was it one time only. One time only could point to some specific incident such as bad AC, or strange interference. While the radio cannot produce interference as audio it can get into cables.

#6 joeydego

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Posted 21 April 2014 - 12:42 PM

It would seem that the receiver would be suspect but we should rule out a couple of other things first.

Try the shorted cable

Are the g90, TC and amp all plugged into the same power strip? They should be for best performance.

What firmware versions are the Tx's and receiver. If not the newest it certainly wouldn't hurt to get them upgraded.

Does the problem continue or was it one time only. One time only could point to some specific incident such as bad AC, or strange interference. While the radio cannot produce interference as audio it can get into cables.

I will try the shorted cable. All involved units are plugged into a furman P1800 AR voltage regulator. I will verify firmware is up to date as well. The problem happened one time, at a venue I played with the same wireless before. 


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#7 Dieselktm199

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Posted 08 June 2014 - 04:36 AM

I had a similar issue last night. g-90 has been flawless for 2 years....(hundreds of gigs). Last night I powered up my rig.... power conditioner> Korg rack Tuner> G90> Eden WT800.

 

Before I could power up my transmitter a huge squealing noise occured. Thank goodness nothing blew up. Unplugged the tuner.... Still squealing.. Played the gig with a trusty cable>amp.

 

Is this a failure that others have experienced. Should I send the device for repair? Seems like it may be DOA. Don't have other receiver to download firmware.

 

I love my G-90... hate to think it's dead.


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#8 dboomer

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Posted 10 June 2014 - 07:08 AM

Have you tried the unit again but in a different venue? With the transmitter turned off you should get no output from the receiver as there is a relay that shuts it off?

Were you passing signal THROUGH the Korg tuner or just sending signal TO it? As I recall there is some issue with Korg tuners.

#9 Dieselktm199

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Posted 21 June 2014 - 05:00 AM

It appears a patch cord had an intermittent short. Once i replaced it, all is good.....

 

Lesson learned.... always spend an extra buck on a good patch cord. Never allow a $7 cord ruin your evening.

 

Cheers!


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#10 dboomer

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Posted 21 June 2014 - 07:01 PM

That's good news




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