Robert F West Chester , PA July 02, 2022 Appliance: Frigidaire Room Air Conditioner FFTH1422U20 Frigidaire Room Air Conditioner Ffth1422u20: Would not power on. Just one beep, when plugged in. How to replace Board Assembly. Replaced Board Assembly after verifying that its fuses were ok. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes