I recently finished my o2 amp build, and after going through all the troubleshooting steps listed on NwAvguy's blog, I'm still having problems.
NwAvGuy: O2 Details
10)Negative Battery Voltage – Check the “-“ terminal of BT2 (closest to U3). It should be –11.8 V and slightly less that what you measured in step 3. If it’s wrong, check D5, D6 and R2.
I'm up to the 10th step on this page (see above), everything else seems to be working, but the voltage between both terminals varies between -2, -3 volts, not the -11.8 it should be receiving. Also noted is that there is correct voltage on the unbranded side of d6, but the lower voltage on the banded side. does anyone know what might be causing this? thanks in advance
NwAvGuy: O2 Details
10)Negative Battery Voltage – Check the “-“ terminal of BT2 (closest to U3). It should be –11.8 V and slightly less that what you measured in step 3. If it’s wrong, check D5, D6 and R2.
I'm up to the 10th step on this page (see above), everything else seems to be working, but the voltage between both terminals varies between -2, -3 volts, not the -11.8 it should be receiving. Also noted is that there is correct voltage on the unbranded side of d6, but the lower voltage on the banded side. does anyone know what might be causing this? thanks in advance
Welcome to diyAudio 🙂
Read the last part of post #1 here:
The Objective2 (O2) Headphone Amp DIY Project
Pretty much every possible fault scenario has been covered in this thread. The guide I put together should help you locate the fault.
Read the last part of post #1 here:
The Objective2 (O2) Headphone Amp DIY Project
Pretty much every possible fault scenario has been covered in this thread. The guide I put together should help you locate the fault.