LOS ANGELES — Andy “Fletch” Fletcher, the unassuming, bespectacled, red-headed keyboardist who for more than 40 years added his synth sounds to Depeche Mode hits like “Just Can’t Get Enough” and “Personal Jesus,” has died at age 60. Depeche Mode announced the death of founding member Fletcher on its official social media pages. A person close to the band said …