Best Buy Co. cut its full-year guidance on sluggish demand for electronics and appliances, a sign of trouble for the retailer looking to pull off a turnaround.Though shoppers are responding to holiday promotions,

Best Buy cut revenue and earnings guidance for the year after shaky demand in the back half of the third quarter dented sales.Chief Executive Corie Barry said Tuesday that demand was softer than expected in late September and October as customers were distracted by the run-up to the election and waited for deals and sales events.

Best Buy is waiting for a wave of shoppers to replace old devices and upgrade to new, higher-tech ones after an approximately two-year sales slump.