PC sound problem

Hey gang,
Have had a saber with PC 3.5 working for a few months but today after unplugging from recharger, I have no sound. All LEDS and FOC is working, but no sound. Checked board and found no changes to my wiring or soldering. Voltmeter shows no power going to speaker when tested at board connections. SD card is in place properly. Don't think I could've muted it because I don't have an aux switch wired up.
I've only found one other mention of this kind of problem on the forums but there was no resolution post...
Any ideas?

I would first try replacing the speaker and see if that helps. Past that, we would need to see good, high quality pictures of everything (wiring at speaker, on the board, etc). You really should have an aux switch with a PC. ;)

I would double check your config files on the SD card, there is a volume parameter that could have accidentally been set to 0, which would conceivably cause this issue