Question about Audio Technica Audio-Technica ATW-T202 Microphone

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My mic wireless mic sounds like it has a ground loop hum when it is in standy mode and when it is all the way on. I've switched cables and batteries what could be causing this hum?

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You could try another power adapter on the receiver, maybe this one blew the filter capacitor. I doubt your problem being the mic, rather check the receiver. Luck !

Posted on Nov 25, 2014

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Posted on Jan 02, 2017

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If it is a 60Hz or 120 hz hum, the fault may be a bad solder connection to a filter capacitor in the power supply.

If it is a hum like a bad mic connection, you may have dirty contacts on an input, dirty tracks on a mixer control, even on the EQ portion.

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Contact cleaner is not a bad idea, slide pots are notorious for spurious noise over time. LPS1 is not bad, but it does use silicone as the dry lubricant portion.

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I`ve just bought a new Fender Telecaster Deluxe. When I plug it into my amp there`s a slight hissing hum. When I touch the strings it stops. I`ve tried it through a different amp & changed leads so


you may have a ground loop problem and when you touch the strings you complete the ground loop so the noise dissapears. make sure the amp is plugged into a proper grounded outlet. also there is an aftermarket ground plate that goes under the pick guard. that is what I put on mine to cut the emf way down. if you bought the guitar from a dealer take it back to the store and ask them why you are getting so much noise.

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Sound like the radio is looking for a ground. I would tell you to take it to a good CB Shop,not all shops work on this radio so be careful and ask them first.But you're touching it or almost touching it is giving it a "False Ground" causing it to hum.

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My home theater speakers make a constant hum whenever my receiver is on. The loudness of the hum changes with the volume control, and goes away entirely when the system is muted. All components are plugged...


jd40,
Sounds like a grounding issue. The first two places to look into is the powered subwoofer and antenna. During your last test, did you leave the FM antenna and subwoofer connected? Many times the hum is directly related to the antenna and/or the subwoofer and to how they are grounded; creating a ground loop through the receivers ground on the outlet. If the antenna is grounded to the dwellings wiring, hum is inevitable and sometime you can get a ground loop hum from how or how & where the subwoofer is grounded. Try taking them completely out of the loop.

Also try taking it further back to the basics, start with the receiver plugged into a known good grounded outlet with no surge or line conditioner in the loop and nothing connected to the receiver, nothing. Use one speaker and different wire to test each speaker output while in tuner and any other mode but phono. With no signal, you will either get nothing (no hum or static) or just static in the tuner mode. No hum is a good sign. Some systems will mute the speakers if no signal is connected to eliminate the static from being produced through the speakers but a ground loop hum will most likely still be produced even in mute. If you get a hum when nothing is connected to the receiver, try looking into getting a better grounded outlet, even maybe to a different dwelling.

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the speakers hook to speaker wires not to any thing else no power no negative poles do you have a remote shut off switch connected to amp this would be important to cut off amp

when cut off amp if you still here the humming this can be an indicator of low power being produced by alternator alternators produce 14 anything below 12 would mean replacement of alternator

if alternator fine then you need to find new ground for amp and make sure you have a good ground for sterio this can be checked with a test light
to check a ground all you do is hook gator clip to power then touch test light end to ground on radio end light comes on got a good ground (make sure not to touch any other sterio wires just the ground wire while connected to power to check grounds)
if pulsing in test light on the ground means you have a bad ground
just disconnect move to better ground

check the amp ground the same way as decribed above

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