cheers to all, any body here knows the specs of this diode? its like zener one glass type about a 1/4 or 1/2 watt size zener. cant find one in market. unknown code. its from a sony tav725 integrated amp power supply. cant also find a service manual to know the specs. the amp im fixing has multiple problem. no audio. has dc on speaker output. already changed ic module stk4162 ll still same problem. if anybody here has already encountered same symptom with stk module ic amp. any info wil be much appreciated. thanks