Here is an update for anyone who happens to encounter the same or similar issue with an HL72A650.
I disassembled my TV and took the projection tray to my workbench, then disassembled the tray to remove the color wheel. The process is fairly straightforward even without a guide. While there are some dissimilarities, this guide
did very closely resemble the process for my TV which is an HL72A650C1FXZA. Once the color wheel was removed, I discovered the crucial bit of information which makes this replacement possible:Samsung lists
the color wheel for the HL72A650C1FXZA part number to be BP96-02069A. This part is not available anywhere, not new, as a refurbished product, or a used pull. However, when I disassembled my TV and removed the color wheel I discovered that the part number on the wheel itself is not BP96-02069A, but instead BP61-01193A
. I found this part number listed on eBay both as a used pull and as a new in box item. I purchased the new in box.TL;DR, HL72A650C1FXZA Color Wheel is BP61-01193A.
Better still, while I had the faulty color wheel removed, I spun it gently with my finger and listened for abrasion in the motor. As I spun it I discovered there was one spot where the noise occurred, I spun the wheel to that spot, then applied some gentle pressure and moved the wheel back and forth over that spot. I reassembled the TV with the faulty color wheel and it started up without any errors whatsoever and has been working fine now for over two weeks of daily use. I also happened to discover that a dark spot which had been present on my TV since I purchased it was a piece of lint on the lens which I removed with a puff of air. Funny, because I had an open warranty claim with Samsung for that dust spec and the Samsung certified repair technician could not determine the issue.
Bear in mind that my color wheel was not overly loud. I did not have yeti like sounds nor did it sound as though it was spooling up for takeoff. The TV simply had some glitching, then would not turn on and a faint whirring was noticeable while I was behind the TV trying to determine the issue. Good luck to anyone replacing the color wheel on this TV, it is a great TV and deserves to last until 4K becomes affordable!