Solar amplifier

Hi guys im currently busy with a solar class d amplifier I got the amp with the power supply fets blown replaced it and powered up the amp i got class d switch on output fets and amp is playing but there is a high pitch sound on the speaker no fets heating up just the AG AND DK ON DRIVER BOARD BUT IT'S NOT BURNING HOT JUST LOW is that normal?


  • 20191021_233648.jpg
    657.2 KB · Views: 43