HAI Omni engineer/developer thread

[ibjeepin]

I've been busy with other projects but did finally trace out the phone circuit on my OmniPro II (schematic attached). There's not much in the audio path to go wrong. Besides a bad capacitor or leaky transistor/protection-device, the only thing is audio codec U3.

I have a board I bought way back on ebay as a backup but never tested. Cant see phone line, been trying to draw out the chema for that section for a while. Thanks!