Window unit no longer cooling

you could pull the front cover off and see if there is a loose wire in the control box (behind where the control knobs are). it could just be a bad thermostat. you will see a copper wire with a silverish end on it coming out of the t-stat, try holding it between your fingers for a few minutes to warm it up, turn the t-stat to coldest setting possible, turn unit on, and then see if the compressor will kick on. if neither of those things help you could try replacing the thermostat, probably not expensive from samsung if the unit isn't too old. if that doesn't help either then the compressor probably bit the dust. but if not its worth fixing! hope that helps.