Hi folks,
I got a 60W mono Amp with TPA3118 chip that doesn't seem to work. There's no signal whatsoever coming out of it. The power LED is on though and I can measure 24V in several random places on the board. If I connect the driver directly to the line out of the Bluetooth receiver, I hear music, so the amp should be receiving a signal.
Do you have any idea how I can figure out what's wrong?
Here's an image of my setup: 20210927-215911 — ImgBB
Thanks in advance!
I got a 60W mono Amp with TPA3118 chip that doesn't seem to work. There's no signal whatsoever coming out of it. The power LED is on though and I can measure 24V in several random places on the board. If I connect the driver directly to the line out of the Bluetooth receiver, I hear music, so the amp should be receiving a signal.
Do you have any idea how I can figure out what's wrong?
Here's an image of my setup: 20210927-215911 — ImgBB
Thanks in advance!
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I added a 1K resistor on each channel before combining them. That shouldn't be the issue though, as I hear the audio (very quietly of course) when I connect the driver directly with the same cable.
I'm not sure if that is a bad sign, but when I connect the receiver to the amplifier and then connect the driver directly to the same connection (basically bypassing the amp) I only hear a regular tapping noise.
I'm not sure if that is a bad sign, but when I connect the receiver to the amplifier and then connect the driver directly to the same connection (basically bypassing the amp) I only hear a regular tapping noise.
Just disconnect the input and finger buzz test it instead for now..
After that if still not working, download the datasheet and check voltages on key pins of the chip
After that if still not working, download the datasheet and check voltages on key pins of the chip