Yeah there are several alternatives, but who the hell would shop at radio shack for electronics parts? Just go to an actual electronics store, or buy online. hex inverters aren't difficult to find.

and no, the fixes do not break other things. Why would you even think that.

and as for the composite being "fine", well, you're wrong. again.

the 750 R83 resister darkens the NES composite output considerably, and also alters the visible NES pallet. To see the difference without actually removing it, unscrew the lid off the srt and insert an NES game and turn it on. remove the composite input and press it against the right side of R83 and look at your tv. As long as you hold it steady, you'll see what the results would be if you removed that. Hold it to the left side for a direct comparison.

I really am growing tired of your idiotic questions and statements. if you don't know what you're talking about, then don't say anything at all. I'm sorry, but my patience with you really has about run out.