Hi, I'm having problems getting this amplifier to work , in that on power up It goes into fault.
Power supply = 12V
Speaker = 8R
I've removed all input cct and grounded inputs Via 1uF caps
There are no shorts nor o/c's, occurs on both boards I have, and for good measure I have replaced the TPA3112 on one of the boards
Power up sequence = Press and hold SW1 apply power wait 2 secs and release SW1 - result Fault LED comes on press SW1 briefly LED goes out then immediately back on.
Tested with and without snubber, with and without speaker, with and without 10R 1000uF series supply filter, with R4 = 100K and R4 = OR, with and without additional output filter.
Am I missing something?
Regards Steve