I don't know how it ever worked at all! I assume your current is 220, I was once supplied a 220 amp by a British company who didn't know the US voltage was 110 and it would not play. So apparently you have been feeding 220 volts into a preamp that was designed for 110. If this is the case it is a testament to its quality. I am still having a hard time understanding how it functioned for a year. What is your wall current?
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