About 2 years ago, I ran a Lyon (Marsh) Roll-X2 for the first time. It worked perfectly and incubated well. I had many chicks hatch. On the last batch, near hatching, it started making a loud noise and I think the temp was too low. The fan stopped moving also. I moved the eggs to a different incubator and they were ok. I thought it was the fan that had the problem. I'm planning on hatching more eggs this year so I want to fix it. I ordered a new fan, soldered the wires to it and hooked it up. It is making a noise like the fan wants to turn, but it doesn't. Is it the solid state thermostat that is bad? Does that make the fan work properly? I've looked all over, and can't find much except that the thermostat is most likely to fail. I don't want to leave it on long enough to see what temp it will get to since the fan may not do so well with that. Any advice? This is the first time I've tinkered with an incubator and so far I'm just guessing. I appreciate any advice, thanks.