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Yamaha P7000 power amplifier silent, check power supply normal insurance intact, normal playback without the power supply LEDs indicate
Time£º2015-05-26 08:25:43  Source£ºNetwork  Author£ºUnknown  Clicks£º1188
  

Check the amplifier tube 2SC5200,2SA1943 pin resistance to normal. Yamaha amp with overheating protection, road test protection switch resistor 47 Ohm resistor is larger than normal to remove the infinite measure, the original thermostat system is 50 ° to 55 ° for normal output. General protection of the amplifier circuit is a major reason power amplifier silent.j6Lservice manual download site
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