Panasonic SA-BTT270 Power Supply Design

With this Panasonic SA-BTT270 I began the diagnostic with the fuse on the power inlet board. If you have a unit that needs servicing, then the best course of action is to take it to a repair centre near you. Due to the complexity of the circuitry and the high voltages involved, repair requires a qualified and experienced engineer. Unfortunately, a switched mode power supply unit (SMPSU) operates on high voltages because the mains AC voltage is directly rectified into DC.

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