XY LM3886 boards not making any sounds

[Hogwild]

Hi everyone:

I bought a couple of the XY LM3886 amp boards a few months ago. I tried to connect each of these (centre tap?) amp boards to the dual secondary PSUs I built from Chipamp.com. No music. No sound. Nothing. I know the PSUs are good, because I've powered 4 Chipamp.com amp boards
with them that sound just dandy.

Can someone tell me if that is possible and if so, how easy is to make that work?


Thanks

 

[nigelwright7557]

How many volts is your power supply ?

 

[Hogwild]

About 28V or so.

 

[nigelwright7557]

About 28V or so.

It needs + and - 28vdc to work.
That means you need +28v, -28v and a zero volt connection.

Also make sure mute circuit is connected correctly.
Mute should be pulled to -28v through a 22k resistor.

 

[Hogwild]

nigel:

Thanks. It was a false alarm. My connections must not have been right, but this time they're working fine. Thanks.