Gaining confidence I seeked out the part I needed and found it:
I fixed my problem. In fact it worked like new thanks to some added cleaning. The image had lost some "pop" and luster and it was all back. So I breathed a sigh of relief, because disassembly involved a lot of tinkering and I wasn't confident it would even power back up!
For about a month, maybe less, this "new" chip did the job. I say "new" because, its from ebay, who knows - these could be factory seconds. Anyhow, the problem began again. This time from the corner of the chip, instead of from random spots. Now, after 4 months, well less than 500 hours I'm ordering another chip and I'm going to try again.
This process, if you do it, is certainly worth the money, but....any suggestions what I do when I replace the chip this time? Last time I did my best to not breath on the chip containment area and handled the chip as little as possible. I also blew out the accumulated dust from the fan, the light wheel and lens (before replacing the chip).
The chip came with a layer of cooling compound, which I didn't remove before installing. I didn't dare, a million little mirrors are on the other side and I couldn't find any safe way to remove that stuff. Plus it fit snuggly, it was a good fit. Replacing the cooling compound seemed pointless.