I’ve purchased two ma12070 boards and i can’t get sound of any of them. I bought it in Aliexpress from Shenzen pillor. Can anyone help me please?
Can you post a link to the board you purchased?
What do you have the mute and enable pins connected to?
What do you have the mute and enable pins connected to?
Can you show how you connect the input signal and the position of the dip switches. What is your powersupply?
My power supply is a 24V Lifepo battery. My amp doesnt have dip switches i connect IN0A and IN0B as the positive and negative outputs of my bluetooth receiver. I’ve tried other receivers even direct 3,5mm jack and nothing happens
If it's like this it's the other way around, but it should work regardless. Without differential inputs it's not going to output much power.
Are the same as the photo, the connection is so simple but i cant make it work, the led work and i tested with multimeter the continuity of the cables.
The first time I tried the amplifiers I connected them to an Adau, could this have something to do with the fact that they don't sound now?
And the green led is on?
Have you tried any other source than your bluetooth?
Or try an cap on VIN+ and GND.
Have you tried any other source than your bluetooth?
Or try an cap on VIN+ and GND.
Green led is on. I've tried another bluetooth board that I have and it doesn't work either I've tried the same bluetooth board with another amplifier and if it works, I'm sure it's something on the board like it's muted or something
It would be interesting if the E and the M stand for Enable and Mute. They are next to R14, R1 and R2. All seem to be unpopulated?
