Dawylde

Hey! I bought a used G10 from ebay, it works like it should. The first owner did not have its original power adapter, so i bought a generic one with same specs of original (5v 1amp). The problem Im having with my G10 is that im getting noise from it, even if I lower the volume on my guitar. I have tried with other guitars and even bass and still getting noise. Also I tried unplugging transmitter and plugging into base for 10 seconds so it can find a "better" channel, but still getting noise. Its hard to describe the noise, but it is like heavy static combined with crackles and pops or like energy hum. I contacted the seller and he said he also used a generic power adapter and had no issue. I dont know what else I can try, could this be grounding issue or the generic adapter? The device works as it should, I can clearly hear my guitar when playing, but when I stop, the noise starts. If anyone can help, I highly appreciate it!