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Audiopipe AP 3000 1D
Audiopipe AP 3000 1D
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Old 20th April 2019, 03:37 AM   #71
caraudioguy2100 is offline caraudioguy2100
diyAudio Member
Join Date: Aug 2010
Here is a picture of the audio driverboard .

Do you know what ic controls the drive signal for the outputs ?

There is something defective on the driverboard which is causing 1 board to have no drive signal to the outputs .

I swapped audio driverboard a and the amp has drive signal on the outputs but this audioboard makes the amp have no drive signal
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Old 20th April 2019, 06:27 AM   #72
Perry Babin is offline Perry Babin  United States
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
All of the components have to pass their respective signals. Start by posting the voltage on the header. A marginal voltage there may let one board work where the other won't.

Before pulling the working board, make a note of all pins of all ICs that have the 80kHz square or triangle waveform (no audio input).
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