I was up late using bad lighting and stupidly connected the power supply to the speaker + & - terminals. The correct connection should be on the opposite side of the board on the vin and gnd. Once I powered up the wav trigger, the leds flash as they should but the audio amp section gets extremely hot and no sound. Is there a way to bypass the failed audio amp regular section by closing the 5v solder jumper pad and connecting the power supply + & - terminals? Or what part(s) are required to replace and get this wav trigger working as normal?
The WAV Trigger has a 5V direct bypass solder jumper. If you close the SJ1 jumper (marked “+5V”), you can power the board directly through the 5V and GND header pins, bypassing the onboard regulator. This will power the digital section and DAC as normal, but it won’t fix the blown amplifier. You’ll still get line-level audio on the “Audio Out” header (stereo), which you can feed into an external amplifier or powered speakers.
Pretty much all the ICs in the analog section of the board but even then the damage may have gotten into parts pf the digital section.
Honestly, you’re better off getting a new one. Repairs are likely not going to be easy and if the main procssor is damaged, you’re not going to have the tools or code needed to reprogram it.
Edit:
Plug some amplified computer speakers into the headphone jack and see if you get clean audio from that. If you do, only the amplifier chip is damaged and this is your fix. If you have issues the DAC chip is damaged as well.
A bit of silver lining is that troubleshooting the faulty one will be a lot easier with the working replacement in hand to compare measurements, component values, etc.