Atari Jaguar flickering video when pressing buttons

[Bratwurst]

Just had a nice condition Jaguar come in this week and I was finally able to test it today, here's my issue:

 

While running Cybermorph, pressing the d-pad and the action buttons at any point (title, demo or playing) makes the display flicker with a horizontal bar of interference randomly across the screen. Have tried two different power supplies and also two different controllers, as well as two different CRT displays. All I have at the moment is the RF switch for video, I would have to make my own a/v or s-video cable otherwise. It was noticeably noisier and more frequent when I initially turned the system on but it's become more subdued, though still frequent and noticeable. I have confirmed the system still has its internal shielding.

 

I could take a video later if necessary and post it on youtube, I am wondering if anyone has encountered this issue before and got to the bottom of it? My initial guess is that the capacitors may need to be replaced especially because it was way more obvious early on until the console was run for a while longer, hence the failing caps eventually warming up.

[+madman]

I would imagine the problem is more related to the RF modulator. It's 2017, at least get yourself a composite cable.

[Bratwurst]

I would imagine the problem is more related to the RF modulator. It's 2017, at least get yourself a composite cable.

 

Certainly possible, I was hoping to hear from anyone else who could verify their personal experience to that end. I plan on making an RGB cable myself but that is some time away.

[Bratwurst]

I rigged a quick connection during lunch to hook up audio and composite video and the flickering bars were gone, so it must be either the RF modulator or the coaxial switch. This issue may be fixed by replacing the system's capacitors later which I intend to do when I have the time, but I wanted to jot this down in case anyone ever comes across the same problem.