Sony XBR Questions
Personally, I would not be too worried about the dollars-and-cents of it. There's more to it than just the "book value" of the set; that is, what it's worth to YOU & how much you like/want it. Keep in mind that the average person would not consider all the $$ that we spend on antique & vintage TVs to be worthwhile. We all have different things that we value differently, and that's fine.
For what it's worth, I've stocked up on a few sets of genuine chips myself.
It's obviously your choice to make, but I would only be comfortable using OEM chips. I'm not knowledgeable enough of the circuit in the set to know the risks of causing cascading failures, but I wouldn't want to take the chance.
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