The light in my bedroom (60 watt incandescent) started flickering (seems to dim or go out momentarily) ever once in awhile, more often after it has bee on for a while.

No other light on this circuit does this this and it does not seem related to any other device turning on or off.

There is no insteon activity when this occurs.

My question is could it be my insteon switch? (2477D dual band switchlinc dimmer v.38)

Thank you

I am sure it COULD be, but not whether this i conclusive evidence.

It could also just be a loose wirenut on the connections..

 

a bulb that has a little bit of a weak fillament if it is not CF.

 

Move it and see if it follows, but I would check the wirenuts myself.

Some of the older hardware revision SwitchLinc Dimmers. Would flicker the load with power line traffic.

Was corrected in the later hardware and I don't remember seeing any of the 2477D Dual Bands reported to flicker their load, but anything seem possible these days.