I'm new here and I need some help with an issue with my guitar amplifier. I connected my electric and electroacoustic guitars with it and both when connected, you can hear the sound of the connection on the amp if you turn up the volume on the guitars. But when playing the guitar, there's no signal output. When I try to move the cables, there's a screeching sound coming from the amp. Anyone had this issue and anyone's got a fix for this.
Thanks in advance.