triac

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About triac

  1. Hi, I have a XLS 1500 which blew up the output FET's Q203 & Q204 Apparently under moderate load it made a loud squealing noise then shut off. It also burnt R143 & 243 beyond recognition. Is it possible someone can identify the values of these two surface mount resistors for me? I have examined the rest of the circuit drive components and they appear to be ok. I am also chasing any info on converting this unit for 240v. Currently it is running through a large step down 110v transformer which I would like to do away with. Thanks & regards -A