The Peterson currently has a small quirk. I went for approximately a decade without turning it on. When I recently activated it the strobe appeared not to pick up any sound, even with an external mic. However, I gave it a couple of light snacks and now it is picking up sound but the screen isn't showing the results as enhanced as it should. I've ordered a replacement, but id like to get this fixed if possible. I have the original schematics... Is this something any electrical engineering could fix, or does it take someone who knows about strobes. Thank you for taking the time to respond