According to Consumer Affairs, common customer issues with Genie garage doors as of 2015 include circuit board failures and plastic parts breaking or disintegrating. In particular, reviews note that the circuit boards have insufficient shielding from external electricity such as lightning.
Reviews also note that the circuitry is prone to extreme failure, including short circuits and overheating. Some customers even note that fires have been started by this type of failure. Replacement sequencer boards are available, and users report that they solve some of these issues. Other reviews of the replacement boards on retailers websites suggest that they are likely to have issues in a similar manner to the original boards, however.