Intermittent dimming and brightening of the display panel may be the result of a fluctuating power supply. Oftentimes this is the case when the circuit board is no longer capable of delivering consistent power to the various internal components of your appliance. A similar fluctuation may be noticeable with the circulation fan(s) as well. Replacing the circuit board may be necessary.
Replacement control boards are available under the Parts section of EdgeStar.com or can be found by clicking the following link:
EdgeStar Replacement Circuit Boards
Please review the following support video for additional information:
*Warranty service should be performed by an authorized service representative only.