Huh. My Objective2 amp just stopped putting out sound. One minute it was working fine, and half-way through a Pandora song (via iPhone and LOD) the audio just stopped.
At the time of failure, there wasn't a pop or anything noticeable. The ON light still shines. I've unplugged it from power and swapped LOD cables. Swapped from iPhone input to my typical external DAC input. Nothing. No sound.
Whereas there used to be a small "thump" upon powering on or off, there is nothing now. No amount of plugging or unplugging -- or on/off or gain toggle -- results in any audible noise through my sensitive Etymotic hf3.
I can't open it up because I don't have the volume pot hex wrench at the office. I'll open and look around tonight.
Are there any known trouble spots or components likely to crap out on the standard BOM?
Is my only recourse (short of SEEING something messed up) to buy a multimeter and do something with it? Yes, I'm a decent builder, but a complete noob at diagnostic.
I built the unit myself, following the components list and instructions on NWG's site. I'm 85% confident that I had good joints and a solid overall build. The 15% of uncertainty is due to having to desolder and flip Q1 and Q2.
Any help is appreciated!