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Line 6 G30 wireless receiver

My power supply lead is starting to fray where it plugs into the receiver unit. I have purchased 2 different replacement power supplies, from different suppliers and both have said they are suitable for the G30. However, when I connect them, both produce an oscillating sound that gets louder as I turn my amp (Ashdown bass combo) up. I get no such problem with the original power supply, which does still work. One has a 2amp out put and the other, 500mA. Is there such thing as an 'approved' Line 6 power supply?
 
What was the voltage and current rating on the original. 2 amp and 500ma are two very different power supplies!

After a quick search it looks like they use a 9 volt 500ma power supply, couldn't find the polarity of the barrel connector.
A power supply rated for higher current would not be an issue.

Maybe the replacements are not filtered well enough, maybe.....wrapping the dc power cable a few wraps through a ferrite core would help
......or get a Line 6 supply. Someone who is handy with a soldering iron could cut the cord back some and replace the connector. Barrel connectors
do come in different outer diameters and different center pin sizes,
 
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I placed my G30 receiver on my pedalboard so the connection is permanent and thus should never fray. Also if you decide to mount yours the same way, order a CIOKS SOL power supply. It will power up everything with the correct power.
 
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The G30 uses a regular 9V center negative supply like most guitar pedals. I haven't had an issue with pretty much any Boss or similar pedal supply, including with it on a daisy chain with other pedals. Mine is an old one from 2010, unfortunately the transmitter died this summer but the receiver still works great.

I haven't measured its actual current draw, but it's not much. The original power supply is not more than 500 mA, might be 250 even. I would be shocked if the receiver actually needed more than 150-200 mA. I'll take a look later if I can find it.
 

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