tomorrow I will try to solder the capacitors to understand what happens, I keep you updated, I preferred to do the tests you asked me to avoid burning the power amp as I ordered it from china and I had to wait 2 weeks before receiving it, let me know also how should I behave with the inductors if you think they are okay or I have to replace them
Since you are not getting the sound form Tweeter or the Woofer, then it is probably something that is common to both amplifiers, such as that both of them are in Mute mode, or the audio signal form input is not getting all the way to the amplifiers.
This is not going to be easy fix. Do you have working board to do Voltage comparison testing?
Do you have audio signal tracer or scope to trace out the audio path from input all the way to the output sections?
Sorry, my typo, it is pin #6.
Just put Black probe on ground, red probe on pin 6 of the working unit and non-working unit and see if they are about the same Voltage.
Page 6 and 7 of the spec sheet shows you what the Voltage of each mode should be.
ok tomorrow I'll do this test, now it's night here, the unit is equipped with an analog / digital converter, could that have some problem? or the operational amplifiers? however we take it one step at a time
I checked the voltages of pin N ° 6 and both on the non-working amplifier and on the working one I have a voltage of 49.5 +/- volts
Are you sue you are using the correct circuit ground? Are you sure you are on the right pin?
I also do not understand 49.5 +/- Volts? +49.5V? -49.5V?
Pin 6 Mode pin works on 5V level.
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