Navyblue
Headphoneus Supremus
- Joined
- Apr 2, 2008
- Posts
- 1,674
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So after more than 2 years, I decided to work on my half built Beta 22. 
One of the L/R channel works fine apparently, but on the other one things aren't so good. When doing the initial setup according to AMB's web page, on step 7 I am not getting any voltage across R34 regardless of trimpot position.
I am not sure what other information to give here, here are some of my readings:
R9: 4.70v
R10: 14.38v
R11: 2.07v
R12: 4.31v
R13: 0.05v
R14: 12.40v
R15: 3.45v
R16: 1.00v
R17: 0.00v
R18: 0.25v
R19: 0.00v
D1: 0.79v
D2: 11.72v
D3: 0.47v
D4: 0.48v
D5: 1.78v
D6: 3.47v
D7: 11.88v
D8: 11.90v
D9: 12.30v
D10: 12.15v
D11: 14.64v
D12: 0.89v
GND to R30: 0.77
GND to R31: 0.17
Look like something is really wrong?
Thanks..
One of the L/R channel works fine apparently, but on the other one things aren't so good. When doing the initial setup according to AMB's web page, on step 7 I am not getting any voltage across R34 regardless of trimpot position.
I am not sure what other information to give here, here are some of my readings:
R9: 4.70v
R10: 14.38v
R11: 2.07v
R12: 4.31v
R13: 0.05v
R14: 12.40v
R15: 3.45v
R16: 1.00v
R17: 0.00v
R18: 0.25v
R19: 0.00v
D1: 0.79v
D2: 11.72v
D3: 0.47v
D4: 0.48v
D5: 1.78v
D6: 3.47v
D7: 11.88v
D8: 11.90v
D9: 12.30v
D10: 12.15v
D11: 14.64v
D12: 0.89v
GND to R30: 0.77
GND to R31: 0.17
Look like something is really wrong?
Thanks..
