Originally Posted by guitarman
Bulb one has 2100 hrs and bulb two has 1600 hrs.
Bulb two went bad earlier, you need a new bulb.
This was a likely option since there is a lot of variability in lamp life, and it may still turn out that the OP's problem returns soon because the lamp is starting to go. However when there are other symptoms such as the color shifting and buzzing it can be a good idea to consider other failure modes before replacing the lamp. I have seen people spend money on new lamps only to find that the same over heating or sync issues occur with the new lamp. Unfortunately the typical user is not going to have access to a known good lamp or other spare parts to help in debugging a problem like this. In fact, a repair center is just as likely to miss something like this, replace the lamp, test it for a few minutes, and then ship the unit back with the same problem.
A projector is a very complex little device with a seriously nasty internal environment. Add to that the fact that this part of the forum deals with the lower end cost-reduced products and all sorts of strange failure modes are possible. I for one find it amazing that these things work as reliably as they do with many people getting years of trouble free use.