Hi AhMiggy. A bit of history would be good. Was it working fine one minute, stopped the next, or was it in storage for 6 months and this happened the first time you fired up. What power supply do you have connected, is it known good? Has it started happening since you replaced 401 & 402 3300uf caps ? Or was happening before that? Take us on your journey so far. Assume you have removed any boards or upgrades in testing. Dunno what you mean by vidiot on the 500. Guessing the mono component out shows the same behavior as RGB, except greyscale..
