I have an NTSC 7800 with no mods installed. I recently got a HOKEY basic and dropped it into my concerto cart. I notice that the HOKEY sound is much quieter than the tia sound. I also tried my original Ballblazer and noticed that the POKEY sound was loudly buzzing and distorted. I suspect that my console has developed a hardware problem. Has anyone else seen this before? Where should I start troubleshooting? Edit: fixed formatting.