Denon DHT-S514 - No Sound Is Output from Rch; No Sound Is Output from Lch

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13. No sound is output from Rch
Start (MAIN PWB)
Check the input signal 4, 5, 10 and 11 pin of U19.
Is the audio signal being input?
Check the output signal 21, 23, 27 and 29 pin of U19.
Is a PWM being output?
Check the output signal between 1 and 2 pin of J5, between
3 and 4 pin of J5.
Is the audio signal being output?
Replace Main PWB.
Check the soldering of U19.
Check the soldering of C200, C209, C210, C220, L35, L36,
L37 and L38.
NO
NO
NO
Finish
Replace the speaker unit.
YES
YES
YES
14. No sound is output from Lch
Start (MAIN PWB)
Check the input signal 4, 5, 10 and 11 pin of U21.
Is the audio signal being input?
Check the output signal 21, 23, 27 and 29 pin of U21.
Is a PWM being output?
Check the output signal between 1 and 2 pin of J6, between
3 and 4 pin of J6.
Is the audio signal being output?
Replace Main PWB.
Check the soldering of U21.
Check the soldering of C250, C258, C261, C268, L39, L40,
L41 and L42.
NO
NO
NO
Finish
Replace the speaker unit.
YES
YES
YES