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Eagle F0-666 amplifier after startup, protect light is long on (not blinking), but the speaker sounds normal
Time£º2015-06-04 08:10:09  Source£ºNetwork  Author£ºUnknown  Clicks£º1151
  

Analysis of maintenance: normal, energized by the V3, V4, and other components of the harmonic oscillators begins free oscillations, alternating the height collector voltage, then V3 collector the red LED flashing. When the relay sucks and after, the V6 in the saturated State, 1N4148 diode conduction, collector voltage V3 pulled down when the red LED grow light, multivibrator forced oscillation. V3 collector measuring Earth resistance of the road around 1.5k, remove the V3, V3 has been penetrated, V3 was replaced in troubleshooting.BdPservice manual download site
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