Hello... Very glad someone is doing a video on this. I had my "belt shock" last September (2010) and took some days to recover from the shock of learning how much HP wanted to charge to come do it. I posted on this forum but got very few answers and pretty much none from anyone who had done it themselves. Ended up finding LPS, who encouraged me to do it myself; said they had a kit... After some two weeks of looking around, i decided to move forward with it. Being very handy with tools, I bought the kit from LPS and got it done in a total of about 6 hours over 3 days. Knowing what I did, I would suggest to anyone that it is not necessary to buy "the kit", only the belt. The other necessities such as the socket wrench for the T-15 (& one other size) can be bought from the local Home Depot, and the HP instructions can be had from the HP site. Of course, LPS did not mention that, but now I know...
I think anyone who is generally handy and PATIENT can do this. It can get a bit scary when one looks at what you have to remove, but it can be done if one follows the instructions. Once done, the next thing is to calibrate / reset as per the instructions; need only glossy paper. I had no trouble with LPS, and the whole thing cost me about $130 + time. Good to see others doing this themselves, as HP is outrageously out of line with their service price !!
This HP design leaves a lot to be criticized. Here is a belt that should last at least 10 YEARS. After all, engine belts in cars can take such stress and still go years... One should not have to take apart half a printer to change a belt. The actual changing of the belt takes just minutes; it is the getting to the belt that consumes so many hours.
The 3100 is an excellent printer, able to push out fine prints; however, I will have to consider other brands next time I buy a printer. Hencha