Opened select DVD Amp motor-pumped wells out of playing DVD discs while in the home, surround left, surround right and the sub woofer speaker four line, leaving only the two main speakers. Power on the audition, and there is nothing wrong, but the owner insisted that the sound on the left do not "sharp" lack of treble. So I left and right speakers secretly swapped the wiring, but the Lord still said connected to the left channel speaker sound no treble No. Desperation to get an oscilloscope input signal to the DVD player in the play of 1kHz and 10kHz, waveform, discovered that 10kHz signal output, the amplifier left channel right channel and smaller waves of distortion at the top. As an enthusiast for many years, had to admire the owners ears badly.dGsservice manual download site
dGsservice manual download site
Determined that amplifier has problems, then open the hood look up a plate of PT2314 ⑩, 152 feet (towels applied to the main channel of the DVD in my computer) and found that not distortion waveform symmetry and equal on both sides, II, 172 feet measurement by probe further, found that waveform is also normal. But when the output is 23, 242 feet, he found that the asymmetric waveform. Disconnect the circuit measured after the feet, still not working. It's been done, decisive change throw PT2314 connection circuit. Then boot computer audition, he said everything is normal.dGsservice manual download site