hi guys--i was referred here by Artemio and i haven't noticed anyone in this thread with the same problem as i'm having with my XRGB3.
basically i am concerned that something inside my unit is failing because of erratic behavior. i'm getting an unstable picture when i connect my Dreamcast at 31khz RGBHV in B0 mode using the DVI output.
the picture will judder very slightly left and right, and the luma signal seems to be messed up somehow. it's like the picture's brightness will vary slightly every frame, and sometimes it looks like faint bands of interference in the luma signal. the color signals seem unaffected.
for some reason the amount of instability decreases as the DVI output resolution goes up. at 640x480 it's very unstable and bad and then gradually gets better as the resolution goes up. at 1080p it's almost gone but still noticeable. i've played with the H/V settings but nothing really seems to make a difference (though i think V-sync lock helped a tiny bit)
also, just now when i turned on the XRGB3 while the DC was already on, the picture was completely unwatchable and full of analog noise. then it slowly cleared up and stabilized, took about ten seconds. could it be a bad capacitor or opamp?
curious if there are any components inside the XRGB3 that are known to fail. i am comfortable with opening up the unit and changing out parts to make the unit more stable. any advice would be appreciated.