Dead TDA7297 ?

[Kakakakakacarrotcake]

Hello
I just salvaged this IC and tried making this circuit :


TDA7297 Audio IC - Electronic Circuits, TV Schematics, Audio



However only output 2+ (pin 15) works and the sound is very very low, very distorted. Is the IC dead or did I make a mistake somewhere, is there a way to test the IC ?
Current is about 0.1A. Signal ground and Power ground is connected.

Thanks

 

[MAAC0]

Try the datasheet schematics.
Bear in mind the speakers connect between 1-2 and 14-15.
They don't connect to ground since it has bridged outputs.

 

[nigelwright7557]

Due to bridging 8 ohm speakers required.

 

[Ian Finch]

From the datasheets, note that the standby and mute control pins need to be biased correctly to get the chip to work properly when it isn't connected to a microprocessor, as designed. See the low cost, stand-alone application circuit, fig 3 here:https://www.st.com/resource/en/datasheet/tda7297.pdf

 

[Kakakakakacarrotcake]

It works now, I did try that schematic before but it didn't work.


After connecting the schematic for the 4-th time it works , I have no idea what was the problem , probably didn't connect everything correctly haha


Thanks for the suggestions