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Sound Reinforcement - Forums for Live Sound Professionals - Your Displayed Name Must Be Your Real Full Name To Post In The Live Sound Forums => AC Power and Grounding => Topic started by: DonnyCooper on September 10, 2022, 03:15:08 AM
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Hello. I work at Gertie’s, the casino in Dawson City, Yukon Canada. We’ve had a Turbosound PA installed for about six years. This year we had a brand new, beautiful lighting rig professionally installed. However in the last five months our turbosound tops have succumb to the same problem multiple times. I have a basic level of electronic repair understanding and have done the visually obvious repair a few times.Something is burning out the same transformer solder points on the AC side. I’ve attached pictures and I’m looking for insight. This is happening too often to be a coincidence.
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Maybe the trace is not large enough to handle the current?
Have to jumper the trace with a piece of wire?
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Have you checked your supply voltage? A lower supply voltage results in higher current draw as the power supply compensates and sometimes that will push gear beyond its capabilities and cause premature failure.
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Have you checked your supply voltage? A lower supply voltage results in higher current draw as the power supply compensates and sometimes that will push gear beyond its capabilities and cause premature failure.
This is a common class D amp failure situation (if these are class D amps). The compensation for voltage sags is slow to normalize as voltage returns, resulting in overvoltage situations not designed-in. Class D's are a work-in-progress, but the wiser manufacturers have made great adjustments as fresh data emerges.
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Out of curiosity, which Turbosound speakers? They don't appear to be Milan, iQ or iX (looking at the flown speakers in the photo).