Crack worked for five minutes on first power up! (sounded GREAT!) But then the left channel got some noise (and you could hear things when I gently tapped the tube), then stopped working all together. Before the failure, everything was great: Resistance checks, voltage checks, both LED's, tube glow, etc. I'm new to soldering, so this thing is a hot mess. That said, nothing looks too egregious...
The Good:
The BAD:
The Good:
- Tube glow from the big tube (6080?), check
- Tube glow from the smaller tube (12Au7?), check (both front and back)
- LED at A8 lights
- ** Resistance Checks Look Good **
- Terminal 3. 0Ω
- Terminal 6: 0Ω
- Terminal 7: 2.9kΩ
- Terminal 8: 0Ω
- Terminal 9: 2.9kΩ
- Terminal 10: 0Ω
- Terminal 12: 0Ω
- Terminal 14: 0Ω
- Terminal 20: 0Ω
- Terminal 21: 0Ω
- Terminal B3: 2.9kΩ
- Terminal B6: 2.9kΩ
- RCA Red: 93.7kΩ
- RCA Blk: 101.6kΩ
- Ground tab (the screw bolt and nut next to Letter E?): 0Ω
The BAD:
- The LED at A3 does NOT light
- ** The Voltage checks have some problems **
- Terminal 1: 78V
- Terminal 2: 168V
- Terminal 3: 0V (though it seemed like it might have 1V but then i would check like ten more times and it would be 0)
- Terminal 4: 163-165V
- Terminal 5: 149V (this seems high, compared to the 50-100V in the manual)
- Terminal 6: 0V
- Terminal 7: 102V
- Terminal 8: 0V
- Terminal 9: 150V (this seems high, compared to the 50-100V in the manual)
- Terminal 10: 0V
Lemme know what you guys think!