[XCSSA] NES Wavy Line Ugliness

[X-otic Computer Systems of San Antonio]

So this is slightly off topic, but since we have been talking retro  
with SIDs, Amigas, etc., I thought I would see if anyone might have  
some suggestions to issues I am having with my NES.

So I have my NES at my desk at work ready to stomp someone at Super  
Mario Bros. (I'm wanting to get some old cartridges and get my  
collection going again, but that is for another day). Last time I  
broke it out, I was using a standard CRT TV, but noticed ugly wavy  
lines. The same wavy lines on my HDTV at home. I thought it was the  
HDTV but I actually think it might be something else, like a dried up  
cap or something. I'm using the RCA outs for audio/video so I can  
avoid the need for the RF converter and associated RF modulator.

Thoughts? Emulation doesn't count :) As many of you now know, I much  
prefer the real deal over emulation (if my MidiBox SID is any  
example :) )

Tim