travisbmartin
New member
So today I was trying to figure out why my Mario Bros. game isn't giving me any digital sound after I had replaced the three VCOs and chips 5L and 6K, which seams to solve most problems from the forums.
Poking around with my scope, I seem to have a signal until I get to MXR1. The manual I have lists MXR1 as a "Rader Matrix 10K Ohm x 20K Ohm"
What is this thing? I can't find an explanation or a replacement anywhere. I'm thinking either this is causing my lack of digital sound, or the LM3900 Audio Amp the signal goes to next.
Poking around with my scope, I seem to have a signal until I get to MXR1. The manual I have lists MXR1 as a "Rader Matrix 10K Ohm x 20K Ohm"
What is this thing? I can't find an explanation or a replacement anywhere. I'm thinking either this is causing my lack of digital sound, or the LM3900 Audio Amp the signal goes to next.